Question 1

The region of the centromere contains repeated DNA sequences known as .

Accepted Answer

The answer of The region of the centromere contains repeated...

Question 2

A mutant strain of yeast possesses a mutation in the nda2 gene, resulting in no production of a1 tubulin. As a result, these cells would most likely

Accepted Answer

A) not enter M phase. 
B) keep the nuclear membrane intact. 
C) have little or no spindle formation. 
D) not duplicate their chromosomes. 
E) not enter S phase. 
A) not enter M phase. 
B) keep the nuclear membrane intact. 
C) have little or no spindle formation. 
D) not duplicate their chromosomes. 
E) not enter S phase.

Question 3

An isolate of a mutant bacterium appears to grow more slowly than the population (wild type)from which it was isolated. Further studies showed that the slower growth was due to a markedly reduced DNA polymerase I activity. From this information, one would expect that this organism would also be deficient in the activity of DNA

Accepted Answer

A) excision repair. 
B) transcription. 
C) recombination. 
D) unwinding. 
E) translation. 
A) excision repair. 
B) transcription. 
C) recombination. 
D) unwinding. 
E) translation.

Question 4

During metaphase of mitosis, how many telomeres are present in a cell in which 2n = 12?

Accepted Answer

A) 48 
B) 1200 
C) 6 
D) 24 
E) 12 
A) 48 
B) 1200 
C) 6 
D) 24 
E) 12

Question 5

In the cell cycle, a mitotic Cdk is present during

Accepted Answer

A) G2. 
B) S. 
C) G1. 
D) M. 
E) all of the above 
A) G2. 
B) S. 
C) G1. 
D) M. 
E) all of the above

Question 6

The proteins most actively synthesized during the S phase of the cell cycle are

Accepted Answer

A) histones. 
B) DNA polymerases. 
C) cyclins. 
D) rRNA proteins. 
E) single- strand binding proteins. 
A) histones. 
B) DNA polymerases. 
C) cyclins. 
D) rRNA proteins. 
E) single- strand binding proteins.

Question 7

The phase of the cell cycle associated with the replication of DNA is

Accepted Answer

A) interphase. 
B) metaphase. 
C) anaphase. 
D) prophase. 
E) telophase. 
A) interphase. 
B) metaphase. 
C) anaphase. 
D) prophase. 
E) telophase.

Question 8

Phosphorylation of is required for chromosome condensation.

Accepted Answer

A) topoisomerase II 
B) DNA gyrase 
C) cyclin 
D) condensin 
E) both A and B 
A) topoisomerase II 
B) DNA gyrase 
C) cyclin 
D) condensin 
E) both A and B

Question 9

In the cell cycle, controlled degradation of regulatory proteins occurs via the

Accepted Answer

A) kinase inhibition pathway. 
B) P450 - protease pathway. 
C) ubiquitin- proteosome pathway. 
D) cyclin proteolysis pathway. 
E) none of the above 
A) kinase inhibition pathway. 
B) P450 - protease pathway. 
C) ubiquitin- proteosome pathway. 
D) cyclin proteolysis pathway. 
E) none of the above

Question 10

Which of the following proteins is observed exclusively in association with prokaryotic DNA replication?

Accepted Answer

A) single- strand binding proteins 
B) primase 
C) telomerase 
D) helicase 
E) DNA polymerase I 
A) single- strand binding proteins 
B) primase 
C) telomerase 
D) helicase 
E) DNA polymerase I

Question 11

Which of the following proteins is observed exclusively in association with eukaryotic DNA replication?

Accepted Answer

A) single- strand binding proteins 
B) DNA gyrase 
C) telomerase 
D) DNA polymerase I 
E) DNA ligase 
A) single- strand binding proteins 
B) DNA gyrase 
C) telomerase 
D) DNA polymerase I 
E) DNA ligase

Question 12

In order to be active, a Cdc- cyclin needs to be

Accepted Answer

A) acetylated. 
B) singly phosphorylated. 
C) doubly phosphorylated. 
D) doubly methylated. 
E) cleaved by proteases. 
A) acetylated. 
B) singly phosphorylated. 
C) doubly phosphorylated. 
D) doubly methylated. 
E) cleaved by proteases.

Question 13

Which of the following would NOT inhibit a cell preparing to undergo mitosis?

Accepted Answer

A) chromosomal abnormalities 
B) environmental signals that no new cells are needed 
C) Chk1 inhibtion of Cdc25 
D) p21 inhibition of G1 
E) Cdc- activating kinase activity 
A) chromosomal abnormalities 
B) environmental signals that no new cells are needed 
C) Chk1 inhibtion of Cdc25 
D) p21 inhibition of G1 
E) Cdc- activating kinase activity

The region of the centromere contains repeated DNA sequences known as .

A mutant strain of yeast possesses a mutation in the nda2 gene, resulting in no production of a1 tubulin. As a result, these cells would most likely

During metaphase of mitosis, how many telomeres are present in a cell in which 2n = 12?

In the cell cycle, a mitotic Cdk is present during

The proteins most actively synthesized during the S phase of the cell cycle are

The phase of the cell cycle associated with the replication of DNA is

Phosphorylation of is required for chromosome condensation.

In the cell cycle, controlled degradation of regulatory proteins occurs via the

Which of the following proteins is observed exclusively in association with prokaryotic DNA replication?

Which of the following proteins is observed exclusively in association with eukaryotic DNA replication?

In order to be active, a Cdc- cyclin needs to be

Which of the following would NOT inhibit a cell preparing to undergo mitosis?

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The Chemistry of the Cell

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Cells and Organelles

Bioenergetics: The Flow of Energy in the Cell

Enzymes: The Catalysts of Life

Membranes: Their Structure, Function, and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

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Signal Transduction Mechanisms: Ii Messengers and Receptors

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Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesion, Cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: DNA, Chromosomes, and the Nucleus

Sexual Reproduction, Meiosis, and Genetic Recombination

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Exam 19: The Cell Cycle, Dna Replication, and Mitosis

The region of the centromere contains repeated DNA sequences known as .

A mutant strain of yeast possesses a mutation in the nda2 gene, resulting in no production of a1 tubulin. As a result, these cells would most likely

During metaphase of mitosis, how many telomeres are present in a cell in which 2n = 12?

In the cell cycle, a mitotic Cdk is present during

The proteins most actively synthesized during the S phase of the cell cycle are

The phase of the cell cycle associated with the replication of DNA is

Phosphorylation of is required for chromosome condensation.

In the cell cycle, controlled degradation of regulatory proteins occurs via the

Which of the following proteins is observed exclusively in association with prokaryotic DNA replication?

Which of the following proteins is observed exclusively in association with eukaryotic DNA replication?

In order to be active, a Cdc- cyclin needs to be

Which of the following would NOT inhibit a cell preparing to undergo mitosis?

A Preview of the Cell

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: The Flow of Energy in the Cell

Enzymes: The Catalysts of Life

Membranes: Their Structure, Function, and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System and Peroxisomes

Signal Transduction Mechanisms: I Electrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Ii Messengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesion, Cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: DNA, Chromosomes, and the Nucleus

Sexual Reproduction, Meiosis, and Genetic Recombination

Gene Expression: I the Genetic Code and Transcription

Gene Expression: II Protein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

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