Question 1

The error frequency of protein synthesis is approximately __________________.

Accepted Answer

10−4

Question 2

A genetic code which reads 5`CCCACUGUA3` codes for what amino acid sequence?

Accepted Answer

Pro-Thr-Val

Question 3

The 3` CCA terminal region of tRNA contains the __________________.

Accepted Answer

acceptor stem

Question 4

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-In prokaryotic gene expression, _______________ and translation are closely coupled in time and space.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

The answer of Use the following to answer questions 
Choose...

Question 5

Class I aminoacyl-tRNA synthetases acylate the __________________ or 3` hydroxyl group of the terminal adenosine of tRNA.

Accepted Answer

The answer of Class I aminoacyl-tRNA synthetases acylate the __________________...

Question 6

Proteins constitute only __________________ of the mass of ribosomes.

Accepted Answer

The answer of Proteins constitute only __________________ of the mass...

Question 7

The genetic code is __________________, in that some amino acids are coded for by more than one codon .

Accepted Answer

The answer of The genetic code is __________________, in that...

Question 8

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-The amino acid is attached to the tRNA molecule at _______________.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

The amino acid is attached to the tRNA molecule at the 3' end with the sequence CCA.

Question 9

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-Hydrolysis of _______________ drives the charging of tRNA with amino acids.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

Hydrolysis of pyrophosphate (PPi) drives the charging of tRNA with amino acids.

Question 10

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-Another name for an amino acid ester of tRNA is _______________.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

An amino acid ester of tRNA is a charged tRNA, which means that it has an amino acid attached to it through an ester bond.

Question 11

Precision of tRNA-mRNA recognition takes place at the first __________________ base pairs of the codon.

Accepted Answer

The answer of Precision of tRNA-mRNA recognition takes place at...

Question 12

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-An I in the first position of the anticodon indicates that _______________ codons can be read by that tRNA.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

The answer of Use the following to answer questions 
Choose...

Question 13

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-The small subunit of the ribosome is _______________.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

The 30S subunit is the small subunit of the ribosome.

Question 14

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-The term applied to the process of protein synthesis is _______________.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

The term applied to the process of protein synthesis is translation.

Question 15

Aminoacyl-tRNA synthetases contain both an activation site and an __________________ site.

Accepted Answer

The answer of Aminoacyl-tRNA synthetases contain both an activation site...

Question 16

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-The 5` end of tRNA is _______________.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

The answer of Use the following to answer questions 
Choose...

Question 17

The synthesis of __________________ is the crucial step in protein synthesis.

Accepted Answer

The answer of The synthesis of __________________ is the crucial...

Question 18

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-The _______________ hypothesis explains why some tRNA molecules can bind to more than one codon.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

The wobble hypothesis explains why some tRNA molecules can bind to more than one codon.

Question 19

Use the following to answer questions 
Choose the correct answer from the list below. Not all of the answers will be used.
-_______________ is a group of ribosomes bound to a single mRNA.
A)CCA 3`
B)polysome
C)PPi hydrolysis
D)transcription
E)translation
F)phosphorylated
G)pG
H)two
I)wobble
J)three
K)charged tRNA
L)30S
M)20S

Accepted Answer

A polysome is a group of ribosomes bound to a single mRNA, allowing for multiple protein synthesis to occur simultaneously.

Question 20

The activation of a tRNA involves the formation of an __________________ intermediate.

Accepted Answer

The answer of The activation of a tRNA involves the...

Quiz 39: The Genetic Code

The error frequency of protein synthesis is approximately __________________.

A genetic code which reads 5`CCCACUGUA3` codes for what amino acid sequence?

The 3` CCA terminal region of tRNA contains the __________________.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -In prokaryotic gene expression, _______________ and translation are closely coupled in time and space.

Class I aminoacyl-tRNA synthetases acylate the __________________ or 3` hydroxyl group of the terminal adenosine of tRNA.

Proteins constitute only __________________ of the mass of ribosomes.

The genetic code is __________________, in that some amino acids are coded for by more than one codon .

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The amino acid is attached to the tRNA molecule at _______________.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -Hydrolysis of _______________ drives the charging of tRNA with amino acids.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -Another name for an amino acid ester of tRNA is _______________.

Precision of tRNA-mRNA recognition takes place at the first __________________ base pairs of the codon.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -An I in the first position of the anticodon indicates that _______________ codons can be read by that tRNA.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The small subunit of the ribosome is _______________.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The term applied to the process of protein synthesis is _______________.

Aminoacyl-tRNA synthetases contain both an activation site and an __________________ site.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The 5` end of tRNA is _______________.

The synthesis of __________________ is the crucial step in protein synthesis.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -The _______________ hypothesis explains why some tRNA molecules can bind to more than one codon.

Use the following to answer questions Choose the correct answer from the list below. Not all of the answers will be used. -_______________ is a group of ribosomes bound to a single mRNA.

The activation of a tRNA involves the formation of an __________________ intermediate.