Question 1

The process of _________ is extremely important in generating genetic diversity.

Accepted Answer

A) translation 
B) transcription 
C) recombination 
D) transformation 
A) translation 
B) transcription 
C) recombination 
D) transformation C

Question 2

Which of the following is an example of a protein that can read the sequence of DNA without opening the double helix?

Accepted Answer

A) RNA polymerase 
B) DNA polymerase 
C) Helicase 
D) Transcription factors 
E) Primase 
A) RNA polymerase 
B) DNA polymerase 
C) Helicase 
D) Transcription factors 
E) Primase D

Question 3

The polarity of DNA synthesis is

Accepted Answer

A) 5$\rarr$3'. 
B) 3'$\rarr$5'. 
C) 5'$\rarr$2'. 
D) 2'$\rarr$5'. 
A) 5$\rarr$3'. 
B) 3'$\rarr$5'. 
C) 5'$\rarr$2'. 
D) 2'$\rarr$5'. A

Question 4

During the S phase of interphase, the state of the DNA can be described as

Accepted Answer

A) a single continuous linear double helix. 
B) a double helix replicated semiconservatively. 
C) a double helix replicated conservatively. 
D) a triple helix replicated semiconservatively. 
A) a single continuous linear double helix. 
B) a double helix replicated semiconservatively. 
C) a double helix replicated conservatively. 
D) a triple helix replicated semiconservatively.

Question 5

During complementary base pairing, enzymes join the base's nucleotide to the preceding nucleotide by a(n) __________bond.

Accepted Answer

A) hydrogen 
B) ionic 
C) phosphodiester 
D) electrostatic 
A) hydrogen 
B) ionic 
C) phosphodiester 
D) electrostatic

Question 6

In the Hershey and Chase experiment designed to determine the molecule of heredity, what was radiolabeled with 35S?

Accepted Answer

A) protein 
B) DNA 
C) RNA 
D) rRNA 
A) protein 
B) DNA 
C) RNA 
D) rRNA

Question 7

Eukaryotic chromosomes have evolved special structures at the ends of chromosomes to ensure the replication of the two ends of linear chromosomes.These structures are called

Accepted Answer

A) methylases. 
B) capping proteins. 
C) ligases. 
D) telomeres. 
E) single-stranded binding proteins. 
A) methylases. 
B) capping proteins. 
C) ligases. 
D) telomeres. 
E) single-stranded binding proteins.

Question 8

X-ray data showed that the spacing between repeating units along the axis of the DNA helix is

Accepted Answer

A) 2.0 angstroms. 
B) 3.4 angstroms. 
C) 20 angstroms. 
D) 34 angstroms. 
A) 2.0 angstroms. 
B) 3.4 angstroms. 
C) 20 angstroms. 
D) 34 angstroms.

Question 9

Suppose a region of DNA is 100 bp in length.How many unique sequences could it potentially represent?

Accepted Answer

A) 1004 
B) 4100 
C) 400 
D) 4,000 
E) 10,000 
A) 1004 
B) 4100 
C) 400 
D) 4,000 
E) 10,000

Question 10

Which of the following is not true of DNA?

Accepted Answer

A) It is acidic. 
B) It contains deoxyribose. 
C) It is found in cell nuclei. 
D) It contains phosphate. 
E) It contains amino acids. 
A) It is acidic. 
B) It contains deoxyribose. 
C) It is found in cell nuclei. 
D) It contains phosphate. 
E) It contains amino acids.

Question 11

With respect to DNA structure, what does polarity refer to?

Accepted Answer

A) DNA nucleotides can be either positively or negatively charged 
B) The phosphate backbone of DNA is negatively charged 
C) DNA nucleotides can be charged or uncharged 
D) DNA strands have a 5' direction and a 3' direction 
A) DNA nucleotides can be either positively or negatively charged 
B) The phosphate backbone of DNA is negatively charged 
C) DNA nucleotides can be charged or uncharged 
D) DNA strands have a 5' direction and a 3' direction

Question 12

The step in DNA replication in which the proteins connect the correct sequence of nucleotides into a continuous new strand is called

Accepted Answer

A) initiation. 
B) elongation. 
C) termination. 
D) translation. 
E) translocation. 
A) initiation. 
B) elongation. 
C) termination. 
D) translation. 
E) translocation.

Question 13

Recombination involves the breakage and reunion of DNA molecules from

Accepted Answer

A) homologous nonsister chromatids. 
B) homologous sister chromatids. 
C) heterologous nonsister chromatids. 
D) heterologous sister chromatids. 
A) homologous nonsister chromatids. 
B) homologous sister chromatids. 
C) heterologous nonsister chromatids. 
D) heterologous sister chromatids.

Question 14

Given the following strand of DNA: 5' CATAGCCTTA 3'
Which of the following sequences is the correct complementary DNA strand?

Accepted Answer

A) 5' CATAGCCTTA 3' 
B) 3' GTATCGGAAT 5' 
C) 5' GTATCGGAAT 3' 
D) 3' GUAUCGGAAU 5' 
E) 3' CATAGCCTTA 5' 
A) 5' CATAGCCTTA 3' 
B) 3' GTATCGGAAT 5' 
C) 5' GTATCGGAAT 3' 
D) 3' GUAUCGGAAU 5' 
E) 3' CATAGCCTTA 5'

Question 15

Which protein relaxes supercoils by nicking the DNA?

Accepted Answer

A) Topoisomerase 
B) Helicase 
C) Primase 
D) Ligase 
E) Telomerase 
A) Topoisomerase 
B) Helicase 
C) Primase 
D) Ligase 
E) Telomerase

Question 16

The group of enzymes able to relax supercoils in DNA is called

Accepted Answer

A) primases. 
B) helicases. 
C) topoisomerases. 
D) telomeres. 
E) ligases. 
A) primases. 
B) helicases. 
C) topoisomerases. 
D) telomeres. 
E) ligases.

Question 17

The nicking of DNA that initiates recombination during mitosis may be due to all of the following EXCEPT:
A.instructions from the normal cell cycle program.
B.X-rays.
C.chemical damage.
D.physical damage.
E.radiation.

Accepted Answer

The answer of The nicking of DNA that initiates recombination...

Question 18

Without __________ regions on the DNA during recombination, gene conversion could not occur.

Accepted Answer

A) homoduplex 
B) heteroduplex 
C) homotriplex 
D) heterotriplex 
A) homoduplex 
B) heteroduplex 
C) homotriplex 
D) heterotriplex

Question 19

In eukaryotic cells, replication proceeds from ____ origin(s) of replication.

Accepted Answer

A) zero 
B) one 
C) two 
D) several 
E) many 
A) zero 
B) one 
C) two 
D) several 
E) many

Question 20

Which of the following contains single-stranded DNA as its genetic material?

Accepted Answer

A) Humans 
B) HIV 
C) ?X174 
D) coli 
A) Humans 
B) HIV 
C) ?X174 
D) coli

Exam 6: DNA Structure, Replication, and Recombination

The process of _________ is extremely important in generating genetic diversity.

Which of the following is an example of a protein that can read the sequence of DNA without opening the double helix?

The polarity of DNA synthesis is

During the S phase of interphase, the state of the DNA can be described as

During complementary base pairing, enzymes join the base's nucleotide to the preceding nucleotide by a(n) __________bond.

In the Hershey and Chase experiment designed to determine the molecule of heredity, what was radiolabeled with 35S?

Eukaryotic chromosomes have evolved special structures at the ends of chromosomes to ensure the replication of the two ends of linear chromosomes.These structures are called

X-ray data showed that the spacing between repeating units along the axis of the DNA helix is

Suppose a region of DNA is 100 bp in length.How many unique sequences could it potentially represent?

Which of the following is not true of DNA?

With respect to DNA structure, what does polarity refer to?

The step in DNA replication in which the proteins connect the correct sequence of nucleotides into a continuous new strand is called

Recombination involves the breakage and reunion of DNA molecules from

Given the following strand of DNA: 5' CATAGCCTTA 3' Which of the following sequences is the correct complementary DNA strand?

Which protein relaxes supercoils by nicking the DNA?

The group of enzymes able to relax supercoils in DNA is called

The nicking of DNA that initiates recombination during mitosis may be due to all of the following EXCEPT: A.instructions from the normal cell cycle program. B.X-rays. C.chemical damage. D.physical damage. E.radiation.

Without __________ regions on the DNA during recombination, gene conversion could not occur.

In eukaryotic cells, replication proceeds from ____ origin(s) of replication.

Which of the following contains single-stranded DNA as its genetic material?

Genetics: The Study of Biological Information

Mendels Principles of Heredity

Extensions to Mendels Laws

The Chromosome Theory of Inheritance

Linkage, Recombination, and the Mapping of Genes on Chromosomes

Anatomy and Function of a Gene: Dissection Through Mutation

Gene Expression: The Flow of Information From DNA to RNA to Protein

Digital Analysis of Genomes

Analyzing Genomic Information

The Eukaryotic Chromosome

Chromosomal Rearrangements and Changes in Chromosome Number

Bacterial Genetics

Organellar Inheritance

Gene Regulation in Prokaryotes

Gene Regulation in Eukaryotes

Manipulating the Genomes of Eukaryotes

The Genetic Analysis of Development

The Genetics of Cancer

Variation and Selection in Populations

Genetics of Complex Traits

Filters

In the Hershey and Chase experiment designed to determine the molecule of heredity, what was radiolabeled with ³⁵S?