Question 1

The more condensed a part of a chromosome is,the more likely it is that the genes in that region will be active.

Accepted Answer

A) True 
 B)False

Question 2

What did Watson and Crick deduce about the three-dimensional structure of DNA?

Accepted Answer

A) There is a repeating pattern every 3.4 nm and every 0.34 nm. 
B) It is a double-stranded helix. 
C) It contains a lot of phosphorus. 
D) It is a large molecule. 
E) It consists of supercoiled chromatin. 
A) There is a repeating pattern every 3.4 nm and every 0.34 nm. 
B) It is a double-stranded helix. 
C) It contains a lot of phosphorus. 
D) It is a large molecule. 
E) It consists of supercoiled chromatin.

Question 3

Who used radioactively labeled T2 bacteriophage to confirm the identity of the transforming principle?

Accepted Answer

A) Griffith 
B) Hershey and Chase 
C) Avery 
D) Gierer and Schramm 
E) Beadle and Tatum 
A) Griffith 
B) Hershey and Chase 
C) Avery 
D) Gierer and Schramm 
E) Beadle and Tatum

Question 4

Certain ________ have RNA for their genetic material.

Accepted Answer

A) bacteria 
B) viruses 
C) plants 
D) eukaryotes 
E) prokaryotes 
A) bacteria 
B) viruses 
C) plants 
D) eukaryotes 
E) prokaryotes

Question 5

Describe the packing of chromatin from the 10-nm to the 30-nm fiber stage.What is the role of histones?

Accepted Answer

10-nm chromatin fiber consists of nucleo

Question 6

The definition of transformation is

Accepted Answer

A) the shift of genetic information from DNA to protein. 
B) the genetic alteration of an organism. 
C) the uptake of genetic information by a cell from the environment. 
D) Both B and C 
E) None of these 
A) the shift of genetic information from DNA to protein. 
B) the genetic alteration of an organism. 
C) the uptake of genetic information by a cell from the environment. 
D) Both B and C 
E) None of these

Question 7

Topoisomerases function to

Accepted Answer

A) remove nucleotides from DNA. 
B) join DNA pieces together. 
C) twist DNA molecules. 
D) attach DNA loops to scaffold proteins. 
E) move chromosomes along spindle fibers. 
A) remove nucleotides from DNA. 
B) join DNA pieces together. 
C) twist DNA molecules. 
D) attach DNA loops to scaffold proteins. 
E) move chromosomes along spindle fibers.

Question 8

In Griffith's experiment involving the transformation of Streptococcus pneumoniae,

Accepted Answer

A) the R strain was virulent. 
B) the S strain was virulent. 
C) both the R and S strains were virulent. 
D) the R strain had a protein capsule. 
E) the S strain had a protein capsule. 
A) the R strain was virulent. 
B) the S strain was virulent. 
C) both the R and S strains were virulent. 
D) the R strain had a protein capsule. 
E) the S strain had a protein capsule.

Question 9

In eukaryotes,the greatest relative amount of tandemly repeated DNA is associated with centromeres and telomeres.

Accepted Answer

A) True 
 B)False

Question 10

Complementary base-pairing allows for

Accepted Answer

A) spontaneous mutations to occur. 
B) genes to be expressed as a phenotype. 
C) DNA to serve as its own template for replication. 
D) replication to be semiconservative. 
E) covalent bonds to form between the opposite bases. 
A) spontaneous mutations to occur. 
B) genes to be expressed as a phenotype. 
C) DNA to serve as its own template for replication. 
D) replication to be semiconservative. 
E) covalent bonds to form between the opposite bases.

Question 11

What was the transforming principle isolated in Griffith's experiment?

Accepted Answer

A) Protein 
B) RNA 
C) DNA 
D) Virus 
E) Polysaccharide 
A) Protein 
B) RNA 
C) DNA 
D) Virus 
E) Polysaccharide

Question 12

What is the function of dispersed repeated sequences such as SINEs and LINEs in eukaryotes?

Accepted Answer

Little is known about the func

Question 13

Loosely aggregated DNA bound to proteins in a eukaryotic cell is called

Accepted Answer

A) chromosomes. 
B) chromatin. 
C) chromatid. 
D) centromere. 
E) nucleoid. 
A) chromosomes. 
B) chromatin. 
C) chromatid. 
D) centromere. 
E) nucleoid.

Question 14

If the base pairs in a DNA helix are 0.34 nm apart,and a complete (360°)turn of the helix takes 3.4 nm,how many base pairs per turn are there in a DNA molecule?

Accepted Answer

There are

Question 15

The displacement loop (D-loop)may be a characteristic of

Accepted Answer

A) centromeres. 
B) telomeres. 
C) A-DNA. 
D) B-DNA. 
E) Z-DNA. 
A) centromeres. 
B) telomeres. 
C) A-DNA. 
D) B-DNA. 
E) Z-DNA.

Question 16

In a strand of DNA,a hydrogen bond connects the phosphate group of one nucleotide to the sugar of the adjacent nucleotide.

Accepted Answer

A) True 
 B)False

Question 17

The genome of most prokaryotes consists of moderately repetitive DNA.

Accepted Answer

A) True 
 B)False

Question 18

What is the C-value paradox,and what is its cause?

Accepted Answer

There is also no direct relationship bet

Question 19

Antiparallel means that

Accepted Answer

A) the two polynucleotide chains run in opposite directions. 
B) each DNA molecule consists of one old and one new strand. 
C) opposite strands are held together by base pairing. 
D) the helix twists to the right. 
E) there is complementary base-pairing. 
A) the two polynucleotide chains run in opposite directions. 
B) each DNA molecule consists of one old and one new strand. 
C) opposite strands are held together by base pairing. 
D) the helix twists to the right. 
E) there is complementary base-pairing.

Question 20

The virus first shown to have RNA as its genetic material was tobacco mosaic virus (TMV).

Accepted Answer

A) True 
 B)False

Exam 2: DNA: The Genetic Material

The more condensed a part of a chromosome is,the more likely it is that the genes in that region will be active.

What did Watson and Crick deduce about the three-dimensional structure of DNA?

Who used radioactively labeled T2 bacteriophage to confirm the identity of the transforming principle?

Certain ________ have RNA for their genetic material.

Describe the packing of chromatin from the 10-nm to the 30-nm fiber stage.What is the role of histones?

The definition of transformation is

Topoisomerases function to

In Griffith's experiment involving the transformation of Streptococcus pneumoniae,

In eukaryotes,the greatest relative amount of tandemly repeated DNA is associated with centromeres and telomeres.

Complementary base-pairing allows for

What was the transforming principle isolated in Griffith's experiment?

What is the function of dispersed repeated sequences such as SINEs and LINEs in eukaryotes?

Loosely aggregated DNA bound to proteins in a eukaryotic cell is called

If the base pairs in a DNA helix are 0.34 nm apart,and a complete (360°)turn of the helix takes 3.4 nm,how many base pairs per turn are there in a DNA molecule?

The displacement loop (D-loop)may be a characteristic of

In a strand of DNA,a hydrogen bond connects the phosphate group of one nucleotide to the sugar of the adjacent nucleotide.

The genome of most prokaryotes consists of moderately repetitive DNA.

What is the C-value paradox,and what is its cause?

Antiparallel means that

The virus first shown to have RNA as its genetic material was tobacco mosaic virus (TMV).

Genetics: An Introduction

DNA Replication

Gene Function

Gene Expression: Transcription

Gene Expression: Translation

Dna Mutation, DNA Repair, and Transposable Elements

Genomics: The Mapping and Sequencing of Genomes

Functional and Comparative Genomics

Recombinant DNA Technology

Mendelian Genetics

Chromosomal Basis of Inheritance

Extensions of and Deviations From Mendelian Genetic Principles

Genetic Mapping in Eukaryotes

Genetics of Bacteria and Bacteriophages

Variations in Chromosome Structure and Number

Regulation of Gene Expression in Bacteria and Bacteriophages

Regulation of Gene Expression in Eukaryotes

Genetic Analysis of Development

Genetics of Cancer

Population Genetics

Quantitative Genetics

Molecular Evolution

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