Question 1

What is meant by the term antiparallel?

Accepted Answer

The two chains in a double -stranded nucleic acid are connected in opposite directions in terms of 5' -3' orientation.

Question 2

What are the two major components of the Tobacco Mosaic Virus?

Accepted Answer

A)  RNA and DNA 
B)  RNA and protein 
C)  lipids and nucleic acids 
D)  DNA and protein 
E)  carbohydrates and nucleic acids 
A)  RNA and DNA 
B)  RNA and protein 
C)  lipids and nucleic acids 
D)  DNA and protein 
E)  carbohydrates and nucleic acids B

Question 3

Name the pyrimidines and the purines in DNA.

Accepted Answer

pyrimidines: cytosine and thymine; purines: adenine and guanine

Question 4

The basic structure of a nucleotide includes _.

Accepted Answer

A)  amino acids 
B)  phosphorus and sulfur 
C)  base, sugar, and phosphate 
D)  mRNA, rRNA, and tRNA 
E)  phosphorus and zinc 
A)  amino acids 
B)  phosphorus and sulfur 
C)  base, sugar, and phosphate 
D)  mRNA, rRNA, and tRNA 
E)  phosphorus and zinc

Question 5

List three forms of DNA.

Accepted Answer

A -DNA, B

Question 6

Experiments conducted in the 1920s by Frederick Griffith involving the bacterium
Diplococcus pneumoniae demonstrated that a substance from one bacterial strain could genetically transform other bacterial strains. What was the name of the substance
capable of such transformation, and who finally determined its identity?

Accepted Answer

deoxyribon

Question 7

(a) Assume that A + T/G + C equals 0.5 in one strand of DNA. What is the ratio of these bases in the complementary strand? (b) If A + G/T + C equals 0.5 in one strand, what is the ratio of these bases in the complementary strand?

Accepted Answer

The answer of (a) Assume that A + T/G +...

Question 8

In an analysis of the nucleotide composition of double -stranded DNA to see which bases are equivalent in concentration, which of the following would be true?

Accepted Answer

A)  A + C = G + T 
B)  A = C 
C)  A = G and C = T 
D)  A + T = G + C 
E)  A = G and C = T and A + C = G + T are both true. 
A)  A + C = G + T 
B)  A = C 
C)  A = G and C = T 
D)  A + T = G + C 
E)  A = G and C = T and A + C = G + T are both true.

Question 9

The strongest direct evidence that DNA is the genetic material comes from which contemporary methodology?

Accepted Answer

recombinan

Question 10

The base content of a sample of DNA is as follows: A = 31%, G = 31%, T = 19%, C =
19%. What conclusion can be drawn from this information?

Accepted Answer

The sample

Question 11

What was the Avery et al.'s (1944) contribution to the understanding of molecular biology?

Accepted Answer

a demonstration that

Question 12

Hershey and Chase used labeled DNA and protein to determine that DNA is the genetic material in bacteria.

Accepted Answer

A) True 
 B)False

Question 13

The classic Hershey and Chase (1952) experiment that offered evidence in support of DNA being the genetic material in bacteriophages made use of which of the following labeled component(s)?

Accepted Answer

A)  phosphorus and sulfur 
B)  nitrogen and oxygen 
C)  hydrogen 
D)  tritium 
E)  None of the answers listed is correct. 
A)  phosphorus and sulfur 
B)  nitrogen and oxygen 
C)  hydrogen 
D)  tritium 
E)  None of the answers listed is correct.

Question 14

Avery et al. (1944) determined that DNA is the genetic material in T2 bacteriophage.

Accepted Answer

A) True 
 B)False

Question 15

Beatrice Mintz and others microinjected DNA into a fertilized mouse egg that after
reaching maturity could be transmitted to the mouse's offspring. What is the general term used to describe an organism that incorporates foreign DNA?

Accepted Answer

The answer of Beatrice Mintz and others microinjected DNA into...

Question 16

Is the accompanying figure DNA or RNA? Is the circle closer to the 5' or 3' end?

Accepted Answer

The answer of Is the accompanying figure DNA or RNA?...

Question 17

Regarding the structure of DNA, the covalently arranged combination of a deoxyribose and a nitrogenous base would be called a(n) _.

Accepted Answer

A)  ribonucleotide 
B)  nucleotide 
C)  nucleoside 
D)  monophospate nucleoside 
E)  oligonucleotide 
A)  ribonucleotide 
B)  nucleotide 
C)  nucleoside 
D)  monophospate nucleoside 
E)  oligonucleotide

Question 18

Provide an overview of the structure of Z -DNA.

Accepted Answer

left -handed helix with two an

Question 19

What does it mean to say that double -stranded nucleic acids are antiparallel?

Accepted Answer

The C -5' to C -3' o

Question 20

In the classic experiment conducted by Hershey and Chase, why was the pellet radioactive in the centrifuge tube that contained bacteria with viruses?

Accepted Answer

A)  The radioactive viruses (coats plus DN
A)  were in the pellet. 
B)  The radioactive viruses were in the pellet, and the bacteria were in the supernatant. 
C)  The bacteria were in the pellet, and they had incorporated radioactive proteins into their cell membranes. 
D)  The radioactive protein coats of the viruses were in the pellet. 
E)  The bacteria were in the pellet, and many contained the radioactive viral DNA. 
A)  The radioactive viruses (coats plus DN
A)  were in the pellet. 
B)  The radioactive viruses were in the pellet, and the bacteria were in the supernatant. 
C)  The bacteria were in the pellet, and they had incorporated radioactive proteins into their cell membranes. 
D)  The radioactive protein coats of the viruses were in the pellet. 
E)  The bacteria were in the pellet, and many contained the radioactive viral DNA.

Exam 9: DNA Structure and Analysis

What is meant by the term antiparallel?

What are the two major components of the Tobacco Mosaic Virus?

Name the pyrimidines and the purines in DNA.

The basic structure of a nucleotide includes _.

List three forms of DNA.

(a) Assume that A + T/G + C equals 0.5 in one strand of DNA. What is the ratio of these bases in the complementary strand? (b) If A + G/T + C equals 0.5 in one strand, what is the ratio of these bases in the complementary strand?

In an analysis of the nucleotide composition of double -stranded DNA to see which bases are equivalent in concentration, which of the following would be true?

The strongest direct evidence that DNA is the genetic material comes from which contemporary methodology?

The base content of a sample of DNA is as follows: A = 31%, G = 31%, T = 19%, C = 19%. What conclusion can be drawn from this information?

What was the Avery et al.'s (1944) contribution to the understanding of molecular biology?

Hershey and Chase used labeled DNA and protein to determine that DNA is the genetic material in bacteria.

The classic Hershey and Chase (1952) experiment that offered evidence in support of DNA being the genetic material in bacteriophages made use of which of the following labeled component(s)?

Avery et al. (1944) determined that DNA is the genetic material in T2 bacteriophage.

Beatrice Mintz and others microinjected DNA into a fertilized mouse egg that after reaching maturity could be transmitted to the mouse's offspring. What is the general term used to describe an organism that incorporates foreign DNA?

Is the accompanying figure DNA or RNA? Is the circle closer to the 5' or 3' end?

Regarding the structure of DNA, the covalently arranged combination of a deoxyribose and a nitrogenous base would be called a(n) _.

Provide an overview of the structure of Z -DNA.

What does it mean to say that double -stranded nucleic acids are antiparallel?

In the classic experiment conducted by Hershey and Chase, why was the pellet radioactive in the centrifuge tube that contained bacteria with viruses?

Introduction to Genetics

Mitosis and Meiosis

Mendelian Genetics

Modifications of Mendelian Ratios

Sex Determination and Sex Chromosomes

Chromosome Mutations: Variation in Number and Arrangement

Linkage and Chromosome Mapping in Eukaryotes

Genetic Analysis and Mapping in Bacteria and Bactierophages

DNA Replication and Recombination

Chromosome Structure and Dna Sequence Organization

The Genetic Code and Transcription

Translation and Proteins

Gene Mutation, Dna Repair, and Transposition

Regulation of Gene Expression

The Genetics of Cancer

Recombinant Dna Technology

Genomics and Proteomics

Applications and Ethics of Genetic Engineering and Biotechnology

Developmental Genetics

Quantitative Genetics and Multifactorial Traits

Population and Evolutionary Genetics

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