Question 1

Small pieces of DNA synthesized on the lagging strand are called ________.

Accepted Answer

The answer of Small pieces of DNA synthesized on the...

Question 2

The ________ pathway uses a set of proteins that bind to ends of two broken DNA fragments and join them together.

Accepted Answer

nonhomolog

Question 3

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

Accepted Answer

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

Question 4

DNA replication of linear chromosomes has multiple sites known as ________.

Accepted Answer

The answer of DNA replication of linear chromosomes has multiple...

Question 5

All of the following circular DNAs exhibit theta replication except

Accepted Answer

A) bacteria. 
B) mitochondria. 
C) chloroplasts. 
D) plasmids. 
E) protists. 
A) bacteria. 
B) mitochondria. 
C) chloroplasts. 
D) plasmids. 
E) protists.

Question 6

Match between columns
                        Premises: ligase
DNA polymerase I
gyrase
DNA polymerase III
primase
helicase

Accepted Answer

The Answer of nicks DNA ahead of replication fork to is...

Question 7

Match between columns
                        Premises: induced by ultraviolet light
occurs with G but not C
caused by spontaneous hydrolysis of a glycosidic bond
DNA glycosylase can repair this damage

Accepted Answer

The Answer of deamination and depurination and pyrimidine dimer formation is...

Question 8

Telomerases are important in the replication of linear chromosomes because there is no ________ at the ends of the lagging strands.

Accepted Answer

The answer of Telomerases are important in the replication of...

Question 9

A way of making multiple copies of a segment of DNA from a single template is known as ________.

Accepted Answer

PCR (polym

Question 10

The protein(s)that facilitate the unfolding of chromatin fibers ahead of the replication fork is (are)

Accepted Answer

A) helicase. 
B) scaffold proteins. 
C) chromatin remodeling proteins. 
D) replisomal proteins. 
E) both choices A and B 
A) helicase. 
B) scaffold proteins. 
C) chromatin remodeling proteins. 
D) replisomal proteins. 
E) both choices A and B

Question 11

Killer lymphocytes can elicit self-destruct mechanisms in target cells by interacting with

Accepted Answer

A) Fas ligand. 
B) Fas receptors. 
C) Ras ligand. 
D) adaptor proteins. 
E) procaspase. 
A) Fas ligand. 
B) Fas receptors. 
C) Ras ligand. 
D) adaptor proteins. 
E) procaspase.

Question 12

A particular strain of yeast produces strains with a mutant cdC₂ gene,resulting in little to no production of the CdC₂ protein kinase.As a result,one would expect that these cells would

Accepted Answer

A) not enter M phase. 
B) not have the nuclear envelope disperse. 
C) lack chromosome condensation. 
D) all of the above 
E) none of the above 
A) not enter M phase. 
B) not have the nuclear envelope disperse. 
C) lack chromosome condensation. 
D) all of the above 
E) none of the above

Question 13

Mice lacking the ability to make caspase-9 die as the result of numerous defects.During the necropsy (animal autopsy)of the animal you note that the brains of these mice are

Accepted Answer

A) unregulated growth of the nerve cells. 
B) lack of apoptosis of some cells. 
C) overstimulation of G-protein-mediated transduction. 
D) overproduction of the Etr1 receptor protein. 
E) all of the above 
A) unregulated growth of the nerve cells. 
B) lack of apoptosis of some cells. 
C) overstimulation of G-protein-mediated transduction. 
D) overproduction of the Etr1 receptor protein. 
E) all of the above

Question 14

At least one aspect of aging has been determined to be the shortening of the ________ with each successive round of cell division.

Accepted Answer

The answer of At least one aspect of aging has...

Question 15

The ________ leads to the release of importin-bound proteins and stimulates microtubule assembly.

Accepted Answer

The answer of The ________ leads to the release of...

Question 16

Ras is to Raf,as MEK is to

Accepted Answer

A) Ras. 
B) tyrosine. 
C) MAPK. 
D) Cdc. 
E) cell growth. 
A) Ras. 
B) tyrosine. 
C) MAPK. 
D) Cdc. 
E) cell growth.

Question 17

In the cell cycle,a mitotic Cdk is present during

Accepted Answer

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

Question 18

Phosphorylation of ________ is required for chromosome condensation.

Accepted Answer

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

Question 19

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

Accepted Answer

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

Question 20

DNA repair in eukaryotes that facilitates replication in regions of thymine dimers is mediated by a unique DNA polymerase

Accepted Answer

A) α. 
B) η. 
C) β. 
D) σ. 
E) δ. 
A) α. 
B) η. 
C) β. 
D) σ. 
E) δ.

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

Small pieces of DNA synthesized on the lagging strand are called ________.

The ________ pathway uses a set of proteins that bind to ends of two broken DNA fragments and join them together.

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

DNA replication of linear chromosomes has multiple sites known as ________.

All of the following circular DNAs exhibit theta replication except

Telomerases are important in the replication of linear chromosomes because there is no ________ at the ends of the lagging strands.

A way of making multiple copies of a segment of DNA from a single template is known as ________.

The protein(s)that facilitate the unfolding of chromatin fibers ahead of the replication fork is (are)

Killer lymphocytes can elicit self-destruct mechanisms in target cells by interacting with

A particular strain of yeast produces strains with a mutant cdC₂ gene,resulting in little to no production of the CdC₂ protein kinase.As a result,one would expect that these cells would

Mice lacking the ability to make caspase-9 die as the result of numerous defects.During the necropsy (animal autopsy)of the animal you note that the brains of these mice are

At least one aspect of aging has been determined to be the shortening of the ________ with each successive round of cell division.

The ________ leads to the release of importin-bound proteins and stimulates microtubule assembly.

Ras is to Raf,as MEK is to

In the cell cycle,a mitotic Cdk is present during

Phosphorylation of ________ is required for chromosome condensation.

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

DNA repair in eukaryotes that facilitates replication in regions of thymine dimers is mediated by a unique DNA polymerase

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: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

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

Sexual Reproduction, meiosis, and Genetic Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Cancer Cells

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