Question 1

MRNA is transcribed by:

Accepted Answer

A)  RNA polymerase I. 
B)  RNA polymerase II. 
C)  RNA polymerase III. 
D)  All of the above. 
E)  None of the above. 
A)  RNA polymerase I. 
B)  RNA polymerase II. 
C)  RNA polymerase III. 
D)  All of the above. 
E)  None of the above.

Question 2

Choose the correct answer from the list below. Not all of the answers will be used.
-Introns to be spliced start with this sequence of ______________ .

Accepted Answer

A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP 
A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP

Question 3

Proteins that possess alternative splicing products include:

Accepted Answer

A)  antibodies. 
B)  hemoglobin β. 
C)  apolipoprotein. 
D)  A and C. 
E)  B and C. 
A)  antibodies. 
B)  hemoglobin β. 
C)  apolipoprotein. 
D)  A and C. 
E)  B and C.

Question 4

RNA polymerase III is responsible for the transcription of:

Accepted Answer

A)  18S rRNA. 
B)  28S rRNA. 
C)  tRNA. 
D)  mRNA. 
E)  A and B. 
A)  18S rRNA. 
B)  28S rRNA. 
C)  tRNA. 
D)  mRNA. 
E)  A and B.

Question 5

Choose the correct answer from the list below. Not all of the answers will be used.
-______________ is a common rRNA modification.

Accepted Answer

A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP 
A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP

Question 6

Two proteins, X and Y, are highly homologous with many identical domains. However, protein Y has two cassettes of amino acid sequences that are not found in X. Explain.

Accepted Answer

The differences are likely due

Question 7

The enzyme _________________ transcribes a single precursor that encodes for the 18S rRNA, the 28S rRNA, and the 5.8S rRNA.

Accepted Answer

The answer of The enzyme _________________ transcribes a single precursor...

Question 8

The percentage of diseases caused by mutations that affect mRNA splicing is:

Accepted Answer

A)  2 
B)  15 
C)  20 
D)  30 
E)  None of the above. 
A)  2 
B)  15 
C)  20 
D)  30 
E)  None of the above.

Question 9

The polypyrimadine tract:

Accepted Answer

A)  is found at the 3` end of an intron. 
B)  is a consensus sequence. 
C)  contains a stretch of 10 pyrimidines. 
D)  All of the above. 
E)  None of the above. 
A)  is found at the 3` end of an intron. 
B)  is a consensus sequence. 
C)  contains a stretch of 10 pyrimidines. 
D)  All of the above. 
E)  None of the above.

Question 10

Which of the following modifications are made to eukaryotic tRNA transcripts?

Accepted Answer

A)  modification of base and ribose moieties 
B)  removal of the 3` trailer 
C)  cleavage of the 5` leader by RNase P 
D)  CCA is added. 
E)  All of the above. 
A)  modification of base and ribose moieties 
B)  removal of the 3` trailer 
C)  cleavage of the 5` leader by RNase P 
D)  CCA is added. 
E)  All of the above.

Question 11

Improper splicing that leads to improper hemoglobin synthesis may cause the disease known as _________________.

Accepted Answer

The answer of Improper splicing that leads to improper hemoglobin...

Question 12

Choose the correct answer from the list below. Not all of the answers will be used.
-______________ is a mechanism of splicing that allows diversity in the proteins generated from a particular gene.

Accepted Answer

A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP 
A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP

Question 13

Choose the correct answer from the list below. Not all of the answers will be used.
-______________ transcription gives rise to three ribosomal components.

Accepted Answer

A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP 
A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP

Question 14

RNA polymerase I transcribes the genes for:

Accepted Answer

A)  mRNA precursors. 
B)  18S, 5.8S, and 28S rRNA. 
C)  most tRNA. 
D)  All of the above. 
E)  None of the above. 
A)  mRNA precursors. 
B)  18S, 5.8S, and 28S rRNA. 
C)  most tRNA. 
D)  All of the above. 
E)  None of the above.

Question 15

Loss of a 3`polyadenylation is likely to cause what?

Accepted Answer

It is likely to caus

Question 16

______________ is used to form cap 0 of mRNA.

Accepted Answer

A)  S-adenosylmethionine 
B)  Cysteine 
C)  Biotin 
D)  Methanol 
E)  Dimethyl-RNA methylase 
A)  S-adenosylmethionine 
B)  Cysteine 
C)  Biotin 
D)  Methanol 
E)  Dimethyl-RNA methylase

Question 17

How is the mature 3`end of mRNA formed?

Accepted Answer

The consensus sequence of AAUAAA is part

Question 18

Choose the correct answer from the list below. Not all of the answers will be used.
-An RNA molecule that is catalytic is called a(n) ______________.

Accepted Answer

A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP 
A) poly(
A)  tail 
B) methylation 
C) alternative splicing 
D) spliceosome 
E) U2 and U6
F)U4, U5, and U6
G)spliced
H)translation
I)RNA editing
J)GU
K)ribozyme
L)RNA polymerase I
M)ATP

Question 19

Approximately how many mRNA transcripts in higher eukaryotes undergo processing?

Accepted Answer

Nearly all mRNA prec

Question 20

What is the role of GTP in self-splicing?

Accepted Answer

GTP serves as the tr

Exam 38: RNA Processing in Eukaryotes

MRNA is transcribed by:

Choose the correct answer from the list below. Not all of the answers will be used. -Introns to be spliced start with this sequence of ______________ .

Proteins that possess alternative splicing products include:

RNA polymerase III is responsible for the transcription of:

Choose the correct answer from the list below. Not all of the answers will be used. -______________ is a common rRNA modification.

Two proteins, X and Y, are highly homologous with many identical domains. However, protein Y has two cassettes of amino acid sequences that are not found in X. Explain.

The enzyme _________________ transcribes a single precursor that encodes for the 18S rRNA, the 28S rRNA, and the 5.8S rRNA.

The percentage of diseases caused by mutations that affect mRNA splicing is:

The polypyrimadine tract:

Which of the following modifications are made to eukaryotic tRNA transcripts?

Improper splicing that leads to improper hemoglobin synthesis may cause the disease known as _________________.

Choose the correct answer from the list below. Not all of the answers will be used. -______________ is a mechanism of splicing that allows diversity in the proteins generated from a particular gene.

Choose the correct answer from the list below. Not all of the answers will be used. -______________ transcription gives rise to three ribosomal components.

RNA polymerase I transcribes the genes for:

Loss of a 3`polyadenylation is likely to cause what?

______________ is used to form cap 0 of mRNA.

How is the mature 3`end of mRNA formed?

Choose the correct answer from the list below. Not all of the answers will be used. -An RNA molecule that is catalytic is called a(n) ______________.

Approximately how many mRNA transcripts in higher eukaryotes undergo processing?

What is the role of GTP in self-splicing?

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

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant DNA Techniques

Filters