Question 1

The manufacture of proteins from RNA and amino acids is referred to as:

Accepted Answer

A)  activation.
B)  transformation.
C)  replication.
D)  transcription.
E)  translation.

Question 2

A random change in a DNA nucleotide base sequence:

Accepted Answer

A)  cannot have an influence on genetic variation.
B)  is never expressed phenotypically.
C)  constitutes a mutation.
D)  is never beneficial to the organism.
E)  always kills the cell.

Question 3

A transcription start signal is called a(n) :

Accepted Answer

A)  initiation codon.
B)  promoter.
C)  origin.
D)  start site.
E)  nonsense codon.

Question 4

Each gene is specific for a particular type of protein. True or False?

Accepted Answer

A) True 
 B)False

Question 5

The process of converting the "message" of mRNA into a sequence of amino acids is called:

Accepted Answer

A)  translation.
B)  transcription.
C)  activation.
D)  replication.
E)  repression.

Question 6

Your tongue does not grow hair because:

Accepted Answer

A)  different genes are expressed in different tissues.
B)  skin cells have extra DNA that codes for hair proteins.
C)  the genes for hair proteins have been deleted from the cells of your tongue.
D)  saliva prevents hair from growing.

Question 7

A sequence of three RNA bases can function as a(n) :

Accepted Answer

A)  codon only.
B)  anticodon only.
C)  gene only.
D)  codon or anticodon.

Question 8

A mutation in which only one nucleotide in the DNA sequence is changed is referred to as a ________ mutation.

Accepted Answer

The answer of A mutation in which only one nucleotide...

Question 9

Which of the following is NOT a means of regulating gene expression?

Accepted Answer

A)  regulating the life span of a protein
B)  modifying proteins after they are synthesized
C)  varying the rate at which messenger RNAs are translated
D)  varying the rate at which messenger RNAs are transcribed
E)  deleting genes from cells in which they are not needed

Question 10

What molecule directly allows translation of the four-letter "nucleic acid language" (A, T, G, and C nucleotides) into the 20 "amino acid language" of proteins?

Accepted Answer

A)  transfer RNA
B)  ribosomal RNA
C)  messenger RNA
D)  DNA

Exam 12: Gene Expression and Regulation

Which of the following is NOT a means of regulating gene expression?

Correct Answer
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A sequence of three RNA bases can function as a(n) :

Correct Answer
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A transcription start signal is called a(n) :

Correct Answer
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Your tongue does not grow hair because:

Correct Answer
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The manufacture of proteins from RNA and amino acids is referred to as:

Correct Answer
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A mutation in which only one nucleotide in the DNA sequence is changed is referred to as a ________ mutation.

Correct Answer
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A random change in a DNA nucleotide base sequence:

Correct Answer
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Each gene is specific for a particular type of protein. True or False?

Correct Answer
verified

The process of converting the "message" of mRNA into a sequence of amino acids is called:

Correct Answer
verified

What molecule directly allows translation of the four-letter "nucleic acid language" (A, T, G, and C nucleotides) into the 20 "amino acid language" of proteins?

Correct Answer
verified

Exam 12: Gene Expression and Regulation

Which of the following is NOT a means of regulating gene expression?

Correct AnswerverifiedShow Answer

A sequence of three RNA bases can function as a(n) :

Correct AnswerverifiedShow Answer

A transcription start signal is called a(n) :

Correct AnswerverifiedShow Answer

Your tongue does not grow hair because:

Correct AnswerverifiedShow Answer

The manufacture of proteins from RNA and amino acids is referred to as:

Correct AnswerverifiedShow Answer

A mutation in which only one nucleotide in the DNA sequence is changed is referred to as a ________ mutation.

Correct AnswerverifiedShow Answer

A random change in a DNA nucleotide base sequence:

Correct AnswerverifiedShow Answer

Each gene is specific for a particular type of protein. True or False?

Correct AnswerverifiedShow Answer

The process of converting the "message" of mRNA into a sequence of amino acids is called:

Correct AnswerverifiedShow Answer

What molecule directly allows translation of the four-letter "nucleic acid language" (A, T, G, and C nucleotides) into the 20 "amino acid language" of proteins?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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