Question 1

Choose the correct answer from the list below. Not all of the answers will be used.

-The biomolecule _______________ delivers the aminoacyl-tRNA to the “A site” in E. coli.

Accepted Answer

A)  initiation factors
B)  ATP
C)  ricin
D)  one
E)  Shine-DalgarnoF) elongation factor TuG) polysomeH) twoI) kanamycinJ) release factorK) N-formylmethionineL) signal sequenceM) GTPN) C) and G)
O) D) and L)

Question 2

Eukaryotic and prokaryotic translation differs primarily in which step?

Accepted Answer

A)   initiation
B)   elongation
C)   termination
D)   All of the above.
E)   None of the above.F) A) and B)
G) A) and C)

Question 3

Choose the correct answer from the list below. Not all of the answers will be used.

-The _______________ proteins recognize UAA, UAG, and UGA codons.

Accepted Answer

A)  initiation factors
B)  ATP
C)  ricin
D)  one
E)  Shine-DalgarnoF) elongation factor TuG) polysomeH) twoI) kanamycinJ) release factorK) N-formylmethionineL) signal sequenceM) GTPN) J) and L)
O) G) and J)

Question 4

Which of the following is/are required for the initiation of protein synthesis in prokaryotes?

Accepted Answer

A)   mRNA
B)   the 30S subunit
C)   fMet-tRNAf
D)   GTP
E)   All of the above.F) B) and D)
G) None of the above

Question 5

What proteins are involved in the circularization of eukaryotic mRNA?

Accepted Answer

The eIF-4E protein that binds ...

Question 6

Choose the correct answer from the list below. Not all of the answers will be used.

-EF-G translocase proteins use the energy of _______________ hydrolysis.

Accepted Answer

A)  initiation factors
B)  ATP
C)  ricin
D)  one
E)  Shine-DalgarnoF) elongation factor TuG) polysomeH) twoI) kanamycinJ) release factorK) N-formylmethionineL) signal sequenceM) GTPN) A) and K)
O) C) and H)

Question 7

In a ribosome, A stands for __________________ and P stands for __________________.

Accepted Answer

The answer of In a ribosome, A stands for __________________...

Question 8

Proteins are synthesized in the __________________ direction.

Accepted Answer

N → C, or ...

Question 9

Choose the correct answer from the list below. Not all of the answers will be used.

-The protein _______________ is toxic because it hydrolyzes a critical adenine base from the 28S RNA molecule of eukaryotes.

Accepted Answer

A)  initiation factors
B)  ATP
C)  ricin
D)  one
E)  Shine-DalgarnoF) elongation factor TuG) polysomeH) twoI) kanamycinJ) release factorK) N-formylmethionineL) signal sequenceM) GTPN) D) and J)
O) I) and J)

Question 10

Eukaryotic mRNA is:

Accepted Answer

A)   linear.
B)   circular.
C)   modified only at the ribose.
D)   discontinuously translated.
E)   None of the above.F) All of the above
G) B) and D)

Question 11

The first amino acid in bacterial proteins is __________________.

Accepted Answer

The answer of The first amino acid in bacterial proteins...

Question 12

Chloramphenicol acts by:

Accepted Answer

A)   binding to the peptidase cell-wall enzyme.
B)   inhibiting peptidyl transferase activity.
C)   inhibiting protein synthesis.
D)   binding to fMET tRNA.
E)   changing the shape of the mRNA.F) B) and C)
G) None of the above

Question 13

Signals that define the beginning and end of protein synthesis are contained in:

Accepted Answer

A)   rRNA.
B)   tRNA.
C)   mRNA.
D)   the ribosome.
E)   protein.F) A) and E)
G) B) and E)

Question 14

How does puromycin inhibit protein synthesis?

Accepted Answer

Puromycin resembles an amino acid attach...

Question 15

What is the final destination of proteins directed to the secretory pathway?

Accepted Answer

Proteins sorted into the secretory pathw...

Question 16

Choose the correct answer from the list below. Not all of the answers will be used.

-_______________ inhibits the interaction between tRNA and 16S rRNA

Accepted Answer

A)  initiation factors
B)  ATP
C)  ricin
D)  one
E)  Shine-DalgarnoF) elongation factor TuG) polysomeH) twoI) kanamycinJ) release factorK) N-formylmethionineL) signal sequenceM) GTPN) B) and E)
O) D) and G)

Question 17

Choose the correct answer from the list below. Not all of the answers will be used.

-How many release factors do eukaryotes have?

Accepted Answer

A)  initiation factors
B)  ATP
C)  ricin
D)  one
E)  Shine-DalgarnoF) elongation factor TuG) polysomeH) twoI) kanamycinJ) release factorK) N-formylmethionineL) signal sequenceM) GTPN) C) and F)
O) A) and E)

Question 18

Choose the correct answer from the list below. Not all of the answers will be used.

-_______________ is a sequence of 9-12 hydrophobic amino acid residues, sometimes containing positively charged amino acids.

Accepted Answer

A)  initiation factors
B)  ATP
C)  ricin
D)  one
E)  Shine-DalgarnoF) elongation factor TuG) polysomeH) twoI) kanamycinJ) release factorK) N-formylmethionineL) signal sequenceM) GTPN) H) and K)
O) I) and J)

Question 19

Coli proteins is responsible for translocation of the mRNA as a result of a conformation change due to the hydrolysis of GTP?

Accepted Answer

A)   RRF
B)   EF-Tu
C)   EF-G
D)   Shine-Delgarno
E)   None of the above.F) None of the above
G) C) and D)

Question 20

What is the first step in the elongation cycle?

Accepted Answer

The first step is th...

Exam 40: The Mechanism of Protein Synthesis

Signals that define the beginning and end of protein synthesis are contained in:

Correct AnswerverifiedShow Answer

In a ribosome, A stands for __________________ and P stands for __________________.

Correct AnswerverifiedShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -_______________ inhibits the interaction between tRNA and 16S rRNA

Correct AnswerverifiedShow Answer

What is the final destination of proteins directed to the secretory pathway?

Correct AnswerverifiedProteins sorted into the secretory pathw...View AnswerShow Answer

Eukaryotic mRNA is:

Correct AnswerverifiedShow Answer

Proteins are synthesized in the __________________ direction.

Correct AnswerverifiedN → C, or ...View AnswerShow Answer

Coli proteins is responsible for translocation of the mRNA as a result of a conformation change due to the hydrolysis of GTP?

Correct AnswerverifiedShow Answer

Chloramphenicol acts by:

Correct AnswerverifiedShow Answer

Which of the following is/are required for the initiation of protein synthesis in prokaryotes?

Correct AnswerverifiedShow Answer

Eukaryotic and prokaryotic translation differs primarily in which step?

Correct AnswerverifiedShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is a sequence of 9-12 hydrophobic amino acid residues, sometimes containing positively charged amino acids.

Correct AnswerverifiedShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -How many release factors do eukaryotes have?

Correct AnswerverifiedShow Answer

The first amino acid in bacterial proteins is __________________.

Correct AnswerverifiedShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -The protein _______________ is toxic because it hydrolyzes a critical adenine base from the 28S RNA molecule of eukaryotes.

Correct AnswerverifiedShow Answer

How does puromycin inhibit protein synthesis?

Correct AnswerverifiedPuromycin resembles an amino acid attach...View AnswerShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -EF-G translocase proteins use the energy of _______________ hydrolysis.

Correct AnswerverifiedShow Answer

What proteins are involved in the circularization of eukaryotic mRNA?

Correct AnswerverifiedThe eIF-4E protein that binds ...View AnswerShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -The _______________ proteins recognize UAA, UAG, and UGA codons.

Correct AnswerverifiedShow Answer

Choose the correct answer from the list below. Not all of the answers will be used. -The biomolecule _______________ delivers the aminoacyl-tRNA to the “A site” in E. coli.

Correct AnswerverifiedShow Answer

What is the first step in the elongation cycle?

Correct AnswerverifiedThe first step is th...View AnswerShow Answer

Correct Answer
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In a ribosome, A stands for and P stands for .

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Proteins sorted into the secretory pathw...
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N → C, or ...
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Puromycin resembles an amino acid attach...
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Correct Answer
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Correct Answer
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The eIF-4E protein that binds ...
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Correct Answer
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Correct Answer
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Correct Answer
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The first step is th...
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