Question 1

Avery used the enzyme _______ to remove the proteins from the cell extracts.

Accepted Answer

A)   protease
B)   DNase
C)   RNase
D)   All of the answers are correct

Question 2

One strand of DNA is 5' - AGGCCTTA - 3'. What is the opposite strand?

Accepted Answer

A)   5'-AGGCCTTA-3'
B)   5'-TCCGGAAT-3'
C)   3'-AGGCCTTA-5'
D)   3'-TCCGGAAT-5'

Question 3

What was the conclusion of the Hershey-Chase experiments?

Accepted Answer

A)  Their results suggested the presence of a transforming principle.
B)  Their results suggested that DNA is a double helix
C)  Their results suggested that A+G=T+C
D)  Their results suggested that the DNA is the genetic material

Question 4

Which of the following is a correct matching of the researcher with their discovery?

Accepted Answer

A)  Pauling provided information on primary structure in biological molecules.
B)  Franklin suggested that DNA was a helix with more than one strand and that there were about 10 bases per turn of the DNA.
C)  Watson and Crick collected a large amount of X-ray data on the structure of DNA.
D)  Chargaff demonstrated that the adenine and cytosine bases and the uracil and guanine bases interacted in some manner.

Question 5

The backbone of the DNA molecule is formed by ________.

Accepted Answer

A)  peptide bonds
B)  ribose sugars
C)  nitrogenous bases
D)  phosphodiester bonds

Question 6

In the Hershey-Chase experiments, the protein coat of the bacteriophage was labeled with the 32P radioisotope.

Accepted Answer

A) True 
 B)False

Question 7

How does DNA differ from RNA?

Accepted Answer

A)  RNA uses only purines
B)  RNA uses a different five-carbon sugar
C)  RNA has a contains different sized phosphate groups
D)  RNA has multiple bases attached to the sugar

Question 8

Adenine and thymine form _______ hydrogen bonds between them, while cytosine and guanine form _______ bonds.

Accepted Answer

A)   2 , 3
B)   3 , 4
C)   3 , 2
D)   4 , 3

Question 9

A purine on one strand of the DNA is always paired with a pyrimidine on the other strand.

Accepted Answer

A) True 
 B)False

Question 10

These individuals determined that DNA was responsible for the process of transduction in T2 phage.

Accepted Answer

A)   Hershey and Chase
B)   Avery, Macleod, and McCarty
C)   Watson and Crick
D)   Creighton and McClintock

Question 11

The building blocks of DNA are called _________.

Accepted Answer

A)   amino acids
B)   codons
C)   nucleotides
D)   alleles

Question 12

What were the conclusions of Franklin's work regarding the structure of DNA?

Accepted Answer

A)  It did not have a helical structure
B)  The helix had more than one strand
C)  The helix contained about 1 bases per turn
D)  The helix had only one strand

Question 13

Frederick Griffith is responsible for discovering what process?

Accepted Answer

A)  Replication
B)  Transmission
C)  Transformation
D)  Transduction

Question 14

All living organisms use DNA as the genetic material.

Accepted Answer

A) True 
 B)False

Question 15

The researcher(s)  who initially used X-ray diffraction to gather information on the DNA molecule was ______.

Accepted Answer

A)  Franklin
B)  Watson and Crick
C)  Hershey and Chase
D)  Pauling
E)  Chargaff

Question 16

Which base is not found in DNA?

Accepted Answer

A)  Cytosine
B)  Guanine
C)  Thymidine
D)  Adenine
E)  Uracil

Question 17

The first group of researchers to correctly identify the double-helix structure of DNA were _______.

Accepted Answer

A)  McClintock and Franklin
B)  Hershey and Chase
C)  Pauling and Avery
D)  Watson and Crick

Question 18

The pyrimidine bases are _______.

Accepted Answer

A)   cytosine, thymine, and uracil
B)   adenine and guanine
C)   adenine and thymine
D)   cytosine and guanine

Question 19

The idea that the adenine and thymine bases of the DNA interact in some manner was first proposed by _______.

Accepted Answer

A)   Watson and Crick
B)   Franklin
C)   Pauling
D)   Chargaff

Question 20

What is the most complex structure DNA can form?

Accepted Answer

A)  individual nucleotides
B)  a folded and bended double helix
C)  a single strand of DNA
D)  a DNA double helix

Exam 9: Molecular Structure of DNA and RNA

The backbone of the DNA molecule is formed by ________.

Correct AnswerverifiedShow Answer

The first group of researchers to correctly identify the double-helix structure of DNA were _______.

Correct AnswerverifiedShow Answer

Frederick Griffith is responsible for discovering what process?

Correct AnswerverifiedShow Answer

Adenine and thymine form _______ hydrogen bonds between them, while cytosine and guanine form _______ bonds.

Correct AnswerverifiedShow Answer

All living organisms use DNA as the genetic material.

Correct AnswerverifiedShow Answer

One strand of DNA is 5' - AGGCCTTA - 3'. What is the opposite strand?

Correct AnswerverifiedShow Answer

Which of the following is a correct matching of the researcher with their discovery?

Correct AnswerverifiedShow Answer

Avery used the enzyme _______ to remove the proteins from the cell extracts.

Correct AnswerverifiedShow Answer

The building blocks of DNA are called _________.

Correct AnswerverifiedShow Answer

What were the conclusions of Franklin's work regarding the structure of DNA?

Correct AnswerverifiedShow Answer

What was the conclusion of the Hershey-Chase experiments?

Correct AnswerverifiedShow Answer

The pyrimidine bases are _______.

Correct AnswerverifiedShow Answer

A purine on one strand of the DNA is always paired with a pyrimidine on the other strand.

Correct AnswerverifiedShow Answer

What is the most complex structure DNA can form?

Correct AnswerverifiedShow Answer

The idea that the adenine and thymine bases of the DNA interact in some manner was first proposed by _______.

Correct AnswerverifiedShow Answer

Which base is not found in DNA?

Correct AnswerverifiedShow Answer

These individuals determined that DNA was responsible for the process of transduction in T2 phage.

Correct AnswerverifiedShow Answer

The researcher(s) who initially used X-ray diffraction to gather information on the DNA molecule was ______.

Correct AnswerverifiedShow Answer

How does DNA differ from RNA?

Correct AnswerverifiedShow Answer

In the Hershey-Chase experiments, the protein coat of the bacteriophage was labeled with the 32P radioisotope.

Correct AnswerverifiedShow Answer

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Adenine and thymine form _ hydrogen bonds between them, while cytosine and guanine form _ bonds.

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In the Hershey-Chase experiments, the protein coat of the bacteriophage was labeled with the ³²P radioisotope.

Correct Answer
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