Question 1

The double helix of DNA is composed of building blocks called

Accepted Answer

A)  amino acids.
B)  monosaccharides.
C)  phospholipids.
D)  disaccharides.
E)  nucleotides.F) B) and E)
G) B) and D)

Question 2

Which of the following does NOT occur during termination of translation?

Accepted Answer

A)  The initiator tRNA brings the amino acid methionine.
B)  Ribosomal subunits separate from each other.
C)  The polypeptide is released.
D)  The ribosome halts at a "stop" codon.
E)  Release factors bind to the stop codon and release the remaining tRNA.F) B) and E)
G) B) and D)

Question 3

It has been difficult to generate drugs to treat AIDS for which reason?

Accepted Answer

A)  HIV does not cause AIDS.
B)  HIV does not use any enzymes that can be targeted by drugs.
C)  HIV mutates rapidly.
D)  The only way to kill a virus is with a vaccine,not with drugs.
E)  People with HIV infections die rapidly,before the drugs have a chance to cure them.F) C) and D)
G) B) and C)

Question 4

Viruses can infect all higher life forms such as plants and animals,but cannot infect bacteria.

Accepted Answer

A) True 
 B)False

Question 5

The type of viral infection in which a virus enters a host cell and remains dormant in the host cell's chromosome is

Accepted Answer

A)  a rare form of viral infection.
B)  a transgenic infection.
C)  a lytic infection.
D)  a systematic infection.
E)  a lysogenic infection.F) C) and D)
G) None of the above

Question 6

The type of viral infection in which a virus enters a host cell,immediately replicates,and causes the host cell to burst is

Accepted Answer

A)  a rare form of viral infection.
B)  a transgenic infection.
C)  a lysogenic infection.
D)  a lytic infection.
E)  a systematic infection.F) A) and E)
G) A) and B)

Question 7

What role do hydrogen bonds play in the DNA molecule?

Accepted Answer

A)  Hydrogen bonds link complementary nitrogenous bases,thus keeping the two strands of DNA parallel to each other.
B)  Hydrogen bonds link the two strands of DNA end to end during transcription and translation.
C)  Hydrogen bonds link the two strands of DNA end to end during transcription only.
D)  Hydrogen bonds link the complementary deoxyribose sugars,thus maintaining a separation between the two DNA strands.E) B) and D)
F) A) and B)

Question 8

A gene is any DNA sequence that is transcribed to any type of RNA.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is NOT a cause of mutation?

Accepted Answer

A)  Errors in DNA replication
B)  Errors during meiosis
C)  Exposure to radiation
D)  Exposure to tobacco
E)  All of the choices are causes of mutations.F) C) and D)
G) All of the above

Exam 7: DNA Structure and Gene Function

The double helix of DNA is composed of building blocks called

Correct Answer
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Which of the following does NOT occur during termination of translation?

Correct Answer
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The type of viral infection in which a virus enters a host cell,immediately replicates,and causes the host cell to burst is

Correct Answer
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What role do hydrogen bonds play in the DNA molecule?

Correct Answer
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It has been difficult to generate drugs to treat AIDS for which reason?

Correct Answer
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Which of the following is NOT a cause of mutation?

Correct Answer
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The type of viral infection in which a virus enters a host cell and remains dormant in the host cell's chromosome is

Correct Answer
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Viruses can infect all higher life forms such as plants and animals,but cannot infect bacteria.

Correct Answer
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A gene is any DNA sequence that is transcribed to any type of RNA.

Correct Answer
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Exam 7: DNA Structure and Gene Function

The double helix of DNA is composed of building blocks called

Correct AnswerverifiedShow Answer

Which of the following does NOT occur during termination of translation?

Correct AnswerverifiedShow Answer

The type of viral infection in which a virus enters a host cell,immediately replicates,and causes the host cell to burst is

Correct AnswerverifiedShow Answer

What role do hydrogen bonds play in the DNA molecule?

Correct AnswerverifiedShow Answer

It has been difficult to generate drugs to treat AIDS for which reason?

Correct AnswerverifiedShow Answer

Which of the following is NOT a cause of mutation?

Correct AnswerverifiedShow Answer

The type of viral infection in which a virus enters a host cell and remains dormant in the host cell's chromosome is

Correct AnswerverifiedShow Answer

Viruses can infect all higher life forms such as plants and animals,but cannot infect bacteria.

Correct AnswerverifiedShow Answer

A gene is any DNA sequence that is transcribed to any type of RNA.

Correct AnswerverifiedShow Answer

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