Question 1

tRNA differs from other types of RNA because it

Accepted Answer

A)  acts as an enzyme. 
B)  is only involved in transcription. 
C)  carries amino acids. 
D)  codes for multiple amino acids. 
E)  is complexed with a protein. 
A)  acts as an enzyme. 
B)  is only involved in transcription. 
C)  carries amino acids. 
D)  codes for multiple amino acids. 
E)  is complexed with a protein.

Question 2

If an mRNA carries AUCGUG as a sequence,what would be the sequence of the DNA complement to the sequence of DNA that is the complement to the mRNA?

Accepted Answer

A)  ATCGTG 
B)  TCGCAC 
C)  CGATCT 
D)  GCTACA 
E)  UAGCAC 
A)  ATCGTG 
B)  TCGCAC 
C)  CGATCT 
D)  GCTACA 
E)  UAGCAC

Question 3

The type of RNA that carries protein-building information is called

Accepted Answer

A)  ribosomal RNA. 
B)  transfer RNA. 
C)  messenger RNA. 
D)  reader RNA. 
E)  translator RNA. 
A)  ribosomal RNA. 
B)  transfer RNA. 
C)  messenger RNA. 
D)  reader RNA. 
E)  translator RNA.

Question 4

MATCHING
Answer the following questions regarding protein synthesis by matching each term with the most appropriate description.
a.anticodon
b.rRNA
c.codon
d.ribosome
e.genetic code
f.translation termination
g.messenger RNA
h.promoters
i.transcription
j.translation
-a mRNA code for one amino acid

Accepted Answer

The answer of MATCHING
Answer the following questions regarding protein synthesis...

Question 5

MATCHING
Answer the following questions regarding protein synthesis by matching each term with the most appropriate description.
a.anticodon
b.rRNA
c.codon
d.ribosome
e.genetic code
f.translation termination
g.messenger RNA
h.promoters
i.transcription
j.translation
-RNA-directed synthesis of polypeptide chains

Accepted Answer

The answer of MATCHING
Answer the following questions regarding protein synthesis...

Question 6

In most species,all mRNA transcripts begin with

Accepted Answer

A)  methionine. 
B)  a ribosome. 
C)  AUG. 
D)  the P site. 
E)  an anticodon. 
A)  methionine. 
B)  a ribosome. 
C)  AUG. 
D)  the P site. 
E)  an anticodon.

Question 7

Four of the five answers listed below are steps in translation.Select the EXCEPTION.

Accepted Answer

A)  initiation 
B)  replication 
C)  chain elongation 
D)  termination 
E)  peptide bond formation 
A)  initiation 
B)  replication 
C)  chain elongation 
D)  termination 
E)  peptide bond formation

Question 8

Which of the following is a homeotic gene that controls heart development?

Accepted Answer

A)  Dunce 
B)  groucho 
C)  Tinman 
D)  toll 
E)  Pacman 
A)  Dunce 
B)  groucho 
C)  Tinman 
D)  toll 
E)  Pacman

Question 9

Which of the following would NOT be the cause of mutations in DNA sequences?

Accepted Answer

A)  RNA polymerase 
B)  DNA polymerase 
C)  transposable elements 
D)  UV light 
E)  more than one of these 
A)  RNA polymerase 
B)  DNA polymerase 
C)  transposable elements 
D)  UV light 
E)  more than one of these

Question 10

Which of the following mutations always lead(s)to a shift of the mRNA's reading frame?

Accepted Answer

A)  deletion and insertion 
B)  deletion and substitution 
C)  insertion and substitution 
D)  substitution 
E)  insertion 
A)  deletion and insertion 
B)  deletion and substitution 
C)  insertion and substitution 
D)  substitution 
E)  insertion

Question 11

The first amino acid that is assembled in translation is

Accepted Answer

A)  methionine 
B)  valine 
C)  lysine 
D)  phenylalanine 
E)  glycine 
A)  methionine 
B)  valine 
C)  lysine 
D)  phenylalanine 
E)  glycine

Question 12

Which of the following adds RNA nucleotides,one at a time,during transcription?

Accepted Answer

A)  RNA polymerase 
B)  DNA polymerase 
C)  RNA nuclease 
D)  transfer RNA 
E)  ribosomal RNA 
A)  RNA polymerase 
B)  DNA polymerase 
C)  RNA nuclease 
D)  transfer RNA 
E)  ribosomal RNA

Question 13

A gene mutation

Accepted Answer

A)  is a change in the nucleotide sequence of DNA. 
B)  may be harmful. 
C)  may arise spontaneously. 
D)  may have no effect. 
E)  is true of all of these. 
A)  is a change in the nucleotide sequence of DNA. 
B)  may be harmful. 
C)  may arise spontaneously. 
D)  may have no effect. 
E)  is true of all of these.

Question 14

Mutations may be caused

Accepted Answer

A)  during replication. 
B)  by transposable elements. 
C)  by UV light and X-ray radiations. 
D)  during transcription. 
E)  by all of these. 
A)  during replication. 
B)  by transposable elements. 
C)  by UV light and X-ray radiations. 
D)  during transcription. 
E)  by all of these.

Question 15

Beta thalassemia is caused by a

Accepted Answer

A)  deletion. 
B)  insertion. 
C)  base-pair substitution. 
D)  frameshift mutation. 
E)  more than one of these. 
A)  deletion. 
B)  insertion. 
C)  base-pair substitution. 
D)  frameshift mutation. 
E)  more than one of these.

Exam 7: Gene Expression and Control

tRNA differs from other types of RNA because it

If an mRNA carries AUCGUG as a sequence,what would be the sequence of the DNA complement to the sequence of DNA that is the complement to the mRNA?

The type of RNA that carries protein-building information is called

MATCHING Answer the following questions regarding protein synthesis by matching each term with the most appropriate description. a.anticodon b.rRNA c.codon d.ribosome e.genetic code f.translation termination g.messenger RNA h.promoters i.transcription j.translation -a mRNA code for one amino acid

In most species,all mRNA transcripts begin with

Four of the five answers listed below are steps in translation.Select the EXCEPTION.

Which of the following is a homeotic gene that controls heart development?

Which of the following would NOT be the cause of mutations in DNA sequences?

Which of the following mutations always lead(s)to a shift of the mRNA's reading frame?

The first amino acid that is assembled in translation is

Which of the following adds RNA nucleotides,one at a time,during transcription?

A gene mutation

Mutations may be caused

Beta thalassemia is caused by a

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