Anatomy & Physiology The Unity of Form and Function Test bank

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Anatomy & Physiology The Unity of Form and Function Test bank

Description

Chapter 04 Genetics of Cellular Function Answer Key

True / False Questions

1. Naked DNA is called chromatin.

FALSE

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.04 Analyze the interrelationships among chromatin, chromosomes and chromatids.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.01b Explain how DNA and proteins are organized to form the chromosomes.
Section: 04.01
Topic: Nucleic acids: DNA and RNA

2. DNA is composed of double-ring nitrogenous bases, whereas RNA is composed of single-ring nitrogenous bases.

FALSE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C04.04b Compare and contrast general molecular structure of carbohydrates, proteins, lipids and nucleic acids.
HAPS Topic: Module C04 Organic compounds.
Learning Outcome: 04.01a Describe the structure of DNA and relate it to its function.
Section: 04.01
Topic: Nucleic acids: DNA and RNA

3. A gene can be defined as an information-containing segment of RNA that codes for the production of a polypeptide.

FALSE

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: S02.01 Define the terms chromosome, gene, allele, homologous, homozygous, heterozygous, genotype and phenotype.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.02a Give a working definition of the gene and explain why new discoveries in genetics have changed our concept of what a gene is.
Section: 04.02
Topic: Genes and their action

4. Although all cells synthesize phospholipids, there are no genes for phospholipids.

TRUE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Outcome: 04.02g Explain how DNA indirectly regulates the synthesis of nonprotein molecules.
Section: 04.02
Topic: Genes and their action

5. DNA never migrates from the nucleus to the cytoplasm to participate directly in protein synthesis.

TRUE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.02 Explain how and why RNA is synthesized.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02c Define genetic code and describe how DNA codes for protein structure.
Section: 04.02
Topic: Protein synthesis

6. The enzyme RNA polymerase participates in translation.

FALSE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.02 Explain how and why RNA is synthesized.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02c Define genetic code and describe how DNA codes for protein structure.
Section: 04.02
Topic: Protein synthesis

7. There are three codons that do not code for any amino acid.

TRUE

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02c Define genetic code and describe how DNA codes for protein structure.
Section: 04.02
Topic: Protein synthesis

8. All proteins made by the ribosomes are exported from a cell for use elsewhere in the body.

FALSE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02e Explain what happens to a protein after its amino acid sequence has been synthesized.
Section: 04.02
Topic: Protein synthesis

9. A cell starting prophase has 92 molecules of DNA in its nucleus.

TRUE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.01c Analyze the functional significance of each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: DNA replication and the cell cycle
Topic: Somatic cell division

10. After mitosis, each chromosome consists of two parallel filaments called sister chromatids.

FALSE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.01c Analyze the functional significance of each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: Somatic cell division

11. Mitosis is responsible for embryonic development and tissue growth.

TRUE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.01a Describe the events that take place in each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: Somatic cell division

12. Many genes occur in alternative forms called alleles.

TRUE

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: S02.01 Define the terms chromosome, gene, allele, homologous, homozygous, heterozygous, genotype and phenotype.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.04b Define allele and discuss how alleles affect the traits of an individual.
Section: 04.04
Topic: Gene inheritance and expression

13. Phenotype is the result of genetic influences only.

FALSE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: S02.01 Define the terms chromosome, gene, allele, homologous, homozygous, heterozygous, genotype and phenotype.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.04c Discuss the interaction of heredity and environment in producing individual traits.
Section: 04.04
Topic: Gene inheritance and expression

14. Oncogenes and tumor-suppressor genes have similar effects on cell division.

FALSE

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.01c Analyze the functional significance of each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03b Discuss the consequences of replication errors.
Section: 04.03
Topic: DNA replication and the cell cycle

15. Eye color is a normal polygenic trait.

TRUE

Accessibility: Keyboard Navigation
Blooms Level: 3. Apply
Gradable: automatic
HAPS Objective: S02.02 Analyze genetics problems involving dominant and recessive alleles, incomplete dominance, codominance, and multiple alleles.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.04b Define allele and discuss how alleles affect the traits of an individual.
Section: 04.04
Topic: Gene inheritance and expression

Multiple Choice Questions

16. DNA is a polymer of __________, which consist of a sugar, a phosphate group, and a __________.

A. amino acids; nucleotide

B. nucleic acids; nucleotide

C. nucleotides; nitrogenous base

D. nucleotides; nucleic acid

E. proteins; nucleotide

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C04.04b Compare and contrast general molecular structure of carbohydrates, proteins, lipids and nucleic acids.
HAPS Topic: Module C04 Organic compounds.
Learning Outcome: 04.01a Describe the structure of DNA and relate it to its function.
Section: 04.01
Topic: Nucleic acids: DNA and RNA

17. If a DNA molecule were known to be 22% thymine (T), what would be the percentage of guanine (G) present?

A. 8%

B. 11%

C. 22%

D. 28%

E. 78%

Accessibility: Keyboard Navigation
Blooms Level: 3. Apply
Gradable: automatic
HAPS Objective: C04.04b Compare and contrast general molecular structure of carbohydrates, proteins, lipids and nucleic acids.
HAPS Topic: Module C04 Organic compounds.
Learning Outcome: 04.01a Describe the structure of DNA and relate it to its function.
Section: 04.01
Topic: Nucleic acids: DNA and RNA

18. Which of these is the correct sequence from simple to more complex?

A. Chromatin, carbon, nucleotide, nitrogenous base, DNA

B. Carbon, nitrogenous base, nucleotide, chromatin, DNA

C. Chromatin, DNA, nucleotide, nitrogenous base, carbon

D. Carbon, nucleotide, nitrogenous base, chromatin, DNA

E. Carbon, nitrogenous base, nucleotide, DNA, chromatin

Accessibility: Keyboard Navigation
Blooms Level: 3. Apply
Gradable: automatic
HAPS Objective: C04.04b Compare and contrast general molecular structure of carbohydrates, proteins, lipids and nucleic acids.
HAPS Topic: Module C04 Organic compounds.
Learning Outcome: 04.01b Explain how DNA and proteins are organized to form the chromosomes.
Section: 04.01
Topic: Nucleic acids: DNA and RNA

19. A __________ is composed of a granular cluster of eight proteins called __________ with DNA wound around them.

A. nucleosome; centrosomes

B. nucleosome; histones

C. chromosome; histones

D. chromosome; centromeres

E. centromere; chromatin

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C04.04b Compare and contrast general molecular structure of carbohydrates, proteins, lipids and nucleic acids.
HAPS Topic: Module C04 Organic compounds.
Learning Outcome: 04.01b Explain how DNA and proteins are organized to form the chromosomes.
Section: 04.01
Topic: Nucleic acids: DNA and RNA

20. What is the complementary DNA base sequence to the DNA strand TGCCAT?

A. TGCCAT

B. UGCCAU

C. ACGGTA

D. ACGGUA

E. ACCGTA

Accessibility: Keyboard Navigation
Blooms Level: 4. Analyze
Gradable: automatic
HAPS Objective: C04.04b Compare and contrast general molecular structure of carbohydrates, proteins, lipids and nucleic acids.
HAPS Topic: Module C04 Organic compounds.
Learning Outcome: 04.01a Describe the structure of DNA and relate it to its function.
Section: 04.01
Topic: Nucleic acids: DNA and RNA

21. A __________ contains the necessary information for the production of a molecule of RNA.

A. genome

B. gene

C. nucleotide

D. genetic code

E. codon

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: S02.01 Define the terms chromosome, gene, allele, homologous, homozygous, heterozygous, genotype and phenotype.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.02a Give a working definition of the gene and explain why new discoveries in genetics have changed our concept of what a gene is.
Section: 04.02
Topic: Genes and their action

22. What is all of the DNA in a set of 23 chromosomes referred to as?

A. A centromere

B. A chromatid

C. The karyotype

D. The phenotype

E. The genome

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: S02.01 Define the terms chromosome, gene, allele, homologous, homozygous, heterozygous, genotype and phenotype.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.02b Explain what the human genome is and what relationship it has to the health sciences.
Section: 04.02
Topic: Genes and their action

23. The human genome consists of approximately __________ pairs of nucleotides.

A. 3 billion

B. 3 million

C. 300,000

D. 3000

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: S02.02 Analyze genetics problems involving dominant and recessive alleles, incomplete dominance, codominance, and multiple alleles.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.02b Explain what the human genome is and what relationship it has to the health sciences.
Section: 04.02
Topic: Genes and their action

24. Copying genetic information from DNA into RNA is called __________; using the information contained in mRNA to make a polypeptide is called __________.

A. transcription; translation

B. translation; transcription

C. DNA replication; translation

D. DNA duplication; transcription

E. DNA translation; RNA transcription

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C10.02 Explain how and why RNA is synthesized.
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02c Define genetic code and describe how DNA codes for protein structure.
Section: 04.02
Topic: Protein synthesis

25. Which of the following is not directly involved in translation?

A. DNA

B. mRNA

C. tRNA

D. rRNA

E. Ribosomes

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02d Describe the process of assembling amino acids to form a protein.
Section: 04.02
Topic: Protein synthesis

26. Transcription occurs in the __________, but most translation occurs in the __________.

A. nucleus; cytoplasm

B. nucleus; nucleolus

C. cytoplasm; nucleus

D. nucleolus; cytoplasm

E. nucleolus; rough endoplasmic reticulum

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.02 Explain how and why RNA is synthesized.
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02c Define genetic code and describe how DNA codes for protein structure.
Section: 04.02
Topic: Protein synthesis

27. __________ are turned on or off by regulatory proteins in accordance with changing needs for the __________ they encode.

A. Enzymes; products

B. Ribosomes; proteins

C. Genes; proteins

D. Proteins; genes

E. Genes; ribosomes

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: S02.04 Explain how environmental factors can modify gene expression.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.02f Describe some ways that a gene can be turned on or off.
Section: 04.02
Topic: Genes and their action

28. Anticodons, codons, and base triplets correspond to __________ respectively.

A. tRNA, DNA, and mRNA

B. DNA, tRNA, and mRNA

C. tRNA, mRNA, and DNA

D. DNA, RNA, and pre-mRNA

E. RNA, DNA, and pre-mRNA

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.01c Describe the types of RNA, their structural and functional differences, and how they compare to DNA.
Section: 04.01
Section: 04.02
Topic: Nucleic acids: DNA and RNA
Topic: Protein synthesis

29. After translation, a protein may undergo structural changes called __________ modifications.

A. splicing

B. posttranscriptional

C. posttranslational

D. polyribosomal

E. secretory

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02e Explain what happens to a protein after its amino acid sequence has been synthesized.
Section: 04.02
Topic: Genes and their action
Topic: Protein synthesis

30. Since there are no genes coding for carbohydrates, nucleic acids, or lipids, how do cells produce them?

A. Enzymes encoded by genes synthesize these products.

B. Cells are born with all the products they need.

C. Cells absorb these products by endocytosis.

D. Cells import these products from older cells.

E. Cells can produce carbohydrates, nucleic acids, and lipids out of proteins.

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C04.06 Demonstrate factors that affect enzyme activity, including denaturation, and interpret graphs showing the effects of various factors on the rate of enzyme- catalyzed reactions.
HAPS Topic: Module C04 Organic compounds.
Learning Outcome: 04.02g Explain how DNA indirectly regulates the synthesis of nonprotein molecules.
Section: 04.02
Topic: Protein synthesis

31. The genetic code is the link between the __________ and the __________ that they represent.

A. DNA molecule; 20 amino acids

B. DNA molecule; 64 amino acids

C. mRNA anticodons; 20 amino acids

D. mRNA codons; 64 amino acids

E. mRNA codons; 20 amino acids

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02c Define genetic code and describe how DNA codes for protein structure.
Section: 04.02
Topic: Protein synthesis

32. You were able to radioactively tag and thereby trace an amino acid that is used to make insulin, a hormone that will be exported out of the cell. The pathway of the tagged amino acid would be __________.

A. free ribosome cytosol vesicle extracellular fluid

B. rough ER Golgi complex Golgi vesicle extracellular fluid

C. rough ER smooth ER Golgi complex Golgi vesicle extracellular fluid

D. smooth ER Golgi complex Golgi vesicle extracellular fluid

E. smooth ER Golgi complex lysosome extracellular fluid

Accessibility: Keyboard Navigation
Blooms Level: 4. Analyze
Gradable: automatic
HAPS Objective: C10.02 Explain how and why RNA is synthesized.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02e Explain what happens to a protein after its amino acid sequence has been synthesized.
Section: 04.02
Topic: Protein synthesis

33. The gene coding for a polypeptide made of 51 amino acids would have a minimum of _________ bases.

A. 20

B. 51

C. 102

D. 153

Accessibility: Keyboard Navigation
Blooms Level: 3. Apply
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02c Define genetic code and describe how DNA codes for protein structure.
Section: 04.02
Topic: Protein synthesis

34. Which of the following is the template for transcription?

A. The molecule that carries codons

B. The molecule that carries anticodons

C. The molecule that carries base triplets

D. The molecule that carries amino acids

E. The molecule that carries tRNA

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02d Describe the process of assembling amino acids to form a protein.
Section: 04.02
Topic: Protein synthesis

35. What is the product of translation?

A. A newly synthesized amino acid

B. A newly synthesized polypeptide

C. A newly synthesized nucleic acid

D. An mRNA

E. A tRNA

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02d Describe the process of assembling amino acids to form a protein.
Section: 04.02
Topic: Protein synthesis

36. Which molecule contains anticodons?

A. An mRNA

B. A DNA molecule

C. A tRNA

D. An rRNA

E. A cDNA

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C10.03 Explain the roles of tRNA, mRNA, and rRNA in protein synthesis.
HAPS Topic: Module C10 Protein synthesis.
Learning Outcome: 04.02d Describe the process of assembling amino acids to form a protein.
Section: 04.02
Topic: Protein synthesis

37. DNA polymerase is most active during which phase of the cell cycle?

A. S

B. G1

C. G2

D. M

E. G0

Accessibility: Keyboard Navigation
Blooms Level: 4. Analyze
Gradable: automatic
HAPS Objective: C12.01c Analyze the functional significance of each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: DNA replication and the cell cycle

38. The G1, S, and G2 phases of the cell cycle are collectively called __________.

A. interphase

B. telophase

C. cytokinesis

D. prophase

E. anaphase

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.01a Describe the events that take place in each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: DNA replication and the cell cycle

39. All of the following participate in DNA replication except __________.

A. DNA

B. ribosomes

C. DNA ligase

D. DNA helicase

E. DNA polymerase

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.03 Describe DNA replication.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03a Describe how DNA is replicated.
Section: 04.03
Topic: DNA replication and the cell cycle

40. Cytokinesis overlaps with which phase of mitosis?

A. The S phase

B. Telophase

C. Metaphase

D. Prophase

E. Interphase

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.02 Distinguish between mitosis and cytokinesis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: Somatic cell division

41. A mutation is __________.

A. a change in size or shape of a cell

B. a beneficial change in DNA structure

C. a harmful change in DNA structure

D. a neutral change in DNA structure

E. a change in DNA structure that might be beneficial, harmful, or neutral

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C15.01 Predict factors or situations that could disrupt organelle function, transport processes, protein synthesis, or the cell cycle.
HAPS Topic: Module C15 Predictions related to homeostatic imbalance, including disease states and disorders.
Learning Outcome: 04.03b Discuss the consequences of replication errors.
Section: 04.03
Topic: DNA replication and the cell cycle

42. DNA replication is called semiconservative because __________.

A. each daughter DNA consists of one new helix and one old helix

B. each daughter DNA consists of one new nucleotide and one old nucleotide

C. each daughter DNA consists of one new chromatid and one old chromatid

D. each daughter cell receives one new chromatid and one old chromatid

E. each daughter cell receives one new helix and one old helix

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.03 Describe DNA replication.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03a Describe how DNA is replicated.
Section: 04.03
Topic: DNA replication and the cell cycle

43. __________ opens up one segment of the DNA helix during replication; __________adds complementary free nucleotides to the exposed DNA strand.

A. DNA ligase; DNA helicase

B. DNA helicase; DNA polymerase

C. DNA ligase; DNA polymerase

D. DNA helicase; DNA ligase

E. DNA polymerase; DNA ligase

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.03 Describe DNA replication.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03a Describe how DNA is replicated.
Section: 04.03
Topic: DNA replication and the cell cycle

44. Which of these cannot cause a mutation?

A. Radiation

B. A virus

C. A chemical

D. A mistake made by the DNA polymerase

E. A mistake made by the RNA polymerase

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.03 Describe DNA replication.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03b Discuss the consequences of replication errors.
Section: 04.03
Topic: DNA replication and the cell cycle

45. Cell division is stimulated by __________ and suppressed by __________.

A. mitosis; cytokinesis

B. mitosis; contact inhibition

C. cell size; cytokinesis

D. growth factors; contact inhibition

E. cell size; contact inhibition

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.01a Describe the events that take place in each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03d Explain how the timing of cell division is regulated.
Section: 04.03
Topic: DNA replication and the cell cycle

46. The stage at which chromosomes aggregate along the equator of a cell is __________.

A. prophase

B. metaphase

C. anaphase

D. telophase

E. interphase

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.01a Describe the events that take place in each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: Somatic cell division

47. Which of these processes occurs during a cells first gap (G1) phase?

A. DNA is semiconservatively replicated.

B. The nuclear envelope breaks down.

C. The cell synthesizes the enzymes that control mitosis.

D. The cell synthesizes proteins and grows.

E. The chromatin condenses into visible chromosomes.

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.01a Describe the events that take place in each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: DNA replication and the cell cycle

48. Sister chromatids are pulled to opposite poles of a cell during __________ of the cell cycle.

A. the S phase

B. the G2 phase

C. prophase

D. metaphase

E. anaphase

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.01b Identify cells that are in each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: Somatic cell division

49. Chromatin shortens and thickens, coiling into compact rods during __________ of mitosis.

A. telophase

B. anaphase

C. interphase

D. prophase

E. metaphase

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.01b Identify cells that are in each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: Somatic cell division

50. Which of the following omits some stage(s) of the cell cycle?

A. G1, S, G2, mitosis

B. Interphase, mitosis

C. G1, DNA replication, G2, mitosis

D. Prophase, metaphase, anaphase, telophase, cytokinesis

E. Interphase, prophase, metaphase, anaphase, telophase, cytokinesis

Accessibility: Keyboard Navigation
Blooms Level: 4. Analyze
Gradable: automatic
HAPS Objective: C12.01a Describe the events that take place in each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: DNA replication and the cell cycle

51. A karyotype shows the __________ chromosomes sorted and isolated from a cell in __________.

A. 23; interphase

B. 23; metaphase

C. 46; prophase

D. 46; metaphase

E. 46; S phase

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: C12.03 Describe DNA replication.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.04a Describe the paired arrangement of chromosomes in the human karyotype.
Section: 04.04
Topic: Gene inheritance and expression

52. Which of these is not found in the karyotype of a normal human male?

A. 46 chromosomes

B. 23 pairs of homologous chromosomes

C. X and Y chromosomes

D. 46 chromatids

E. 92 DNA molecules

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.03 Describe DNA replication.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.04a Describe the paired arrangement of chromosomes in the human karyotype.
Section: 04.04
Topic: Gene inheritance and expression

53. A cell finishing mitosis has __________ DNA molecules, while a cell finishing DNA replication has __________ DNA molecules.

A. 46; 46

B. 46; 92

C. 46; 23

D. 23; 46

E. 23; 23

Accessibility: Keyboard Navigation
Blooms Level: 3. Apply
Gradable: automatic
HAPS Objective: C12.01c Analyze the functional significance of each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: DNA replication and the cell cycle

54. If one allele is not phenotypically expressed in the presence of another, we say that it is a(an) __________ allele.

A. homozygous

B. heterozygous

C. recessive

D. dominant

E. suppressed

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: S02.01 Define the terms chromosome, gene, allele, homologous, homozygous, heterozygous, genotype and phenotype.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.04b Define allele and discuss how alleles affect the traits of an individual.
Section: 04.04
Topic: Gene inheritance and expression

55. Hemophilia is caused by a sex-linked recessive allele. This means that __________.

A. women can be carriers but cannot get hemophilia

B. the gene is found on the Y chromosome

C. a man can give the allele to his son but not to his daughter

D. a son who has hemophilia inherited the allele from his mother

E. a son who has hemophilia inherited the allele from his father

Accessibility: Keyboard Navigation
Blooms Level: 3. Apply
Gradable: automatic
HAPS Objective: S02.02 Analyze genetics problems involving dominant and recessive alleles, incomplete dominance, codominance, and multiple alleles.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.04b Define allele and discuss how alleles affect the traits of an individual.
Section: 04.04
Topic: Gene inheritance and expression

56. Eye color is caused by genes at multiple loci. This phenomenon is called __________.

A. pleiotropy

B. sex linkage

C. polygenic inheritance

D. incomplete dominance

E. multiple carriers

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: S02.03 Explain how polygenic inheritance differs from inheritance that is controlled by only one gene.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.04b Define allele and discuss how alleles affect the traits of an individual.
Section: 04.04
Topic: Gene inheritance and expression

57. Germ cells have __________ unpaired chromosomes and are thus called __________ cells.

A. 23; somatic

B. 23; haploid (n)

C. 23; diploid (2n)

D. 46; somatic

E. 46; diploid (2n)

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C13.05 Give examples of cell types in the body that divide by meiosis and examples of circumstances in the body that require meiotic cell division.
HAPS Topic: Module C13 Reproductive cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: Reproductive cell division

58. The allele for cleft chin (C) is dominant to the allele for uncleft chin (c). A male and female who are both heterozygous for cleft chin have a child. What is the chance that this child will have an uncleft chin?

A. 0%

B. 25%

C. 50%

D. 75%

E. 100%

Accessibility: Keyboard Navigation
Blooms Level: 4. Analyze
Gradable: automatic
HAPS Objective: S02.02 Analyze genetics problems involving dominant and recessive alleles, incomplete dominance, codominance, and multiple alleles.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.04b Define allele and discuss how alleles affect the traits of an individual.
Section: 04.04
Topic: Gene inheritance and expression

59. The alleles possessed by all members of a population collectively are called the __________.

A. species DNA

B. population DNA

C. gene pool

D. genetic drift

E. phenotype

Accessibility: Keyboard Navigation
Blooms Level: 1. Remember
Gradable: automatic
HAPS Objective: S02.01 Define the terms chromosome, gene, allele, homologous, homozygous, heterozygous, genotype and phenotype.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.04c Discuss the interaction of heredity and environment in producing individual traits.
Section: 04.04
Topic: Gene inheritance and expression

60. In familial hypercholesterolemia, individuals with two abnormal alleles die of heart attacks in childhood, those with only one abnormal allele typically die as young adults, and those with two normal alleles have normal life expectancies. This exemplifies __________.

A. penetrance

B. codominance

C. pleiotropy

D. complete dominance

E. incomplete dominance

Accessibility: Keyboard Navigation
Blooms Level: 4. Analyze
Gradable: automatic
HAPS Objective: S02.02 Analyze genetics problems involving dominant and recessive alleles, incomplete dominance, codominance, and multiple alleles.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.04b Define allele and discuss how alleles affect the traits of an individual.
Section: 04.04
Topic: Gene inheritance and expression

61. All of the bodys nonreproductive cells, called __________, usually have 23 pairs of chromosomes and are thus called __________ cells.

A. germ cells; haploid (n)

B. germ cells; diploid (2n)

C. somatic cells; haploid (n)

D. somatic cells; diploid (2n)

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.05 Give examples of cell types in the body that divide by mitosis and examples of circumstances in the body that require mitotic cell division.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03c Describe the life history of a cell, including the events of mitosis.
Section: 04.03
Topic: Reproductive cell division

62. Which of the following is not found in RNA?

A. Thymine

B. Uracil

C. Ribose

D. Guanine

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C04.04b Compare and contrast general molecular structure of carbohydrates, proteins, lipids and nucleic acids.
HAPS Topic: Module C04 Organic compounds.
Learning Outcome: 04.01c Describe the types of RNA, their structural and functional differences, and how they compare to DNA.
Section: 04.01
Topic: Nucleic acids: DNA and RNA

63. Genes produce their products __________.

A. as their products are needed or not

B. at a steady rate all the time

C. only when the appropriate hormone is present

D. when the transcription activator is inhibited by an extracellular signal

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: S02.04 Explain how environmental factors can modify gene expression.
HAPS Topic: Module S02 Gene inheritance & expression.
Learning Outcome: 04.02f Describe some ways that a gene can be turned on or off.
Section: 04.02
Topic: Genes and their action

64. Cells undergo division when which of the following conditions have been met?

A. They have grown large enough and replicated their DNA

B. They are still growing and have ample nutrients

C. They are stimulated by growth factors and neighboring cells are squeezed tightly against them

D. They have grown large enough and neighboring cells are squeezed tightly against them

Accessibility: Keyboard Navigation
Blooms Level: 2. Understand
Gradable: automatic
HAPS Objective: C12.01a Describe the events that take place in each stage of generalized cell cycle, including interphase and the stages of mitosis.
HAPS Topic: Module C12 Somatic cell division.
Learning Outcome: 04.03d Explain how the timing of cell division is regulated.
Section: 04.03
Topic: DNA replication and the cell cycle

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