Question 1

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

Accepted Answer

editing

Question 2

What is the amino acid error rate in protein synthesis? Is this rate logical in evolutionary terms of function?

Accepted Answer

The error rate is approximately 10−4. This is consistent with a requirement to accurately translate proteins of approximately 1000 amino acids without mistakes.

Question 3

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

Accepted Answer

degenerate

Question 4

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.

Accepted Answer

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 
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

Question 5

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.

Accepted Answer

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 
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

Question 6

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

Accepted Answer

The answer of A genetic code which reads 5`CCCACUGUA3` codes...

Question 7

How much energy is used to attach the amino acid to the tRNA?

Accepted Answer

The equivalents of two ATPs ar

Question 8

The actual three-dimensional structure of tRNA is a(n):

Accepted Answer

A)  L-shape. 
B)  cloverleaf. 
C)  twisted triple helix. 
D)  All of the above. 
E)  None of the above. 
A)  L-shape. 
B)  cloverleaf. 
C)  twisted triple helix. 
D)  All of the above. 
E)  None of the above.

Question 9

Protein synthesis takes place on:

Accepted Answer

A)  lysozomes. 
B)  nuclear pores. 
C)  vacuoles. 
D)  ribosomes 
E)  None of the above. 
A)  lysozomes. 
B)  nuclear pores. 
C)  vacuoles. 
D)  ribosomes 
E)  None of the above.

Question 10

Which of the following components of the tRNA is/are important for the binding specificity of the tRNA synthetase?

Accepted Answer

A)  acceptor stem 
B)  anticodon loop 
C)  TΨC loop 
D)  A and B 
E)  A, B, and C 
A)  acceptor stem 
B)  anticodon loop 
C)  TΨC loop 
D)  A and B 
E)  A, B, and C

Question 11

What is the theory about how palindromic RNA polymerase transcription termination signals function?

Accepted Answer

In the palindromic region, the bases for

Question 12

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.

Accepted Answer

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 
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

Question 13

Proteins constitute only __________________ of the mass of ribosomes.

Accepted Answer

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

Question 14

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

Accepted Answer

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 
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

Question 15

Why is it important that transcription and translation are tightly coupled?

Accepted Answer

This increases the efficiency

Question 16

Give an example of how the treatment of diabetes has benefited from the near universality of the genetic code.

Accepted Answer

The protein insulin, used in the treatme

Question 17

Describe the subunits of E. coli ribosomes.

Accepted Answer

E. coli ribosomes contain a large (50S)

Question 18

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 19

What role does the ribosomal RNA play in the 70S ribosome structure?

Accepted Answer

Structurally, the 70S ribosome

Question 20

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

Accepted Answer

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 
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

Exam 39: The Genetic Code

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

What is the amino acid error rate in protein synthesis? Is this rate logical in evolutionary terms of function?

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

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.

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

How much energy is used to attach the amino acid to the tRNA?

The actual three-dimensional structure of tRNA is a(n):

Protein synthesis takes place on:

Which of the following components of the tRNA is/are important for the binding specificity of the tRNA synthetase?

What is the theory about how palindromic RNA polymerase transcription termination signals function?

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.

Proteins constitute only __________________ of the mass of ribosomes.

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

Why is it important that transcription and translation are tightly coupled?

Give an example of how the treatment of diabetes has benefited from the near universality of the genetic code.

Describe the subunits of E. coli ribosomes.

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

What role does the ribosomal RNA play in the 70S ribosome structure?

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

Biochemistry and the Unity of Life

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Protein Three-Dimensional Structure

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Lipids

Membrane Structure and Function

Signal Transduction Pathways

Digestion: Turning a Meal Into Cellular Biochemicals

Metabolism: Basic Concepts and Design

Glycolysis

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Electron Transport Chain

The Proton-Motive Force

The Light Reactions

The Calvin Cycle

Glycogen Degradation

Glycogen Synthesis

The Pentose Phosphate Pathway

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Amino Acids Synthesis

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Mechanism of Protein Synthesis

Recombinant DNA Techniques

Filters