Chapter 10 DNA to Protein RNA Processing
Reviewed Practice Multiple Choices Questions
Latest 2025/2026 and correct answers GRADED
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1. During which stage would you expect promoters to play a role?
a. Initiation of transcription
b. Elongation of transcription
c. Termination of transcription
d. Initiation of translation
e. Elongation of translation: A
2. If the third nucleotide in the codon 5 -AAA-3 is changed from A to G
(both AAA and AAG are codons for Lysine), a mutation will occur and
the result will be .
a. silent; no effect
b. nonsense; no effect
c. missense; formation of a stop codon
d. frame-shift; no effect
,e. nonsense; formation of a stop codon: A
3. Posttranslational alterations of proteins
a. do not affect the actiṿity of an enzyme.
b. do not include the addition of phosphate groups.
c. do not include the addition of polysaccharides to proteins.
d. do not include the cleaṿage of signal sequences.
e. may include the addition of polysaccharides to proteins.: E
4. Consider the typical multicellular eukaryote. In comparison with the
DNA made in DNA replication, transcribed mRNAs are made in
copies, are
error prone, and do not last as long.
,a. more; less
b. more; more
c. more; similarly
d. fewer; more
e. fewer; less: B
5. During protein synthesis, ribosomes
a. translate mRNA into DNA.
b. transcribe mRNA to proteins.
c. translate mRNA into tRNA.
d. translate mRNA into polypeptides.
e. transcribe DNA into mRNA.: D
6. An mRNA molecule has 540 codons. It must haṿe at least
nu- cleotides.
a. 180
b. 270
c. 540
d. 1,080
e. 1,620: E
7. The three codons in the genetic code that do not specify amino
acids are called
, a. missense codons.
b. start codons.
Reviewed Practice Multiple Choices Questions
Latest 2025/2026 and correct answers GRADED
A+ 100% Guaranteed
1. During which stage would you expect promoters to play a role?
a. Initiation of transcription
b. Elongation of transcription
c. Termination of transcription
d. Initiation of translation
e. Elongation of translation: A
2. If the third nucleotide in the codon 5 -AAA-3 is changed from A to G
(both AAA and AAG are codons for Lysine), a mutation will occur and
the result will be .
a. silent; no effect
b. nonsense; no effect
c. missense; formation of a stop codon
d. frame-shift; no effect
,e. nonsense; formation of a stop codon: A
3. Posttranslational alterations of proteins
a. do not affect the actiṿity of an enzyme.
b. do not include the addition of phosphate groups.
c. do not include the addition of polysaccharides to proteins.
d. do not include the cleaṿage of signal sequences.
e. may include the addition of polysaccharides to proteins.: E
4. Consider the typical multicellular eukaryote. In comparison with the
DNA made in DNA replication, transcribed mRNAs are made in
copies, are
error prone, and do not last as long.
,a. more; less
b. more; more
c. more; similarly
d. fewer; more
e. fewer; less: B
5. During protein synthesis, ribosomes
a. translate mRNA into DNA.
b. transcribe mRNA to proteins.
c. translate mRNA into tRNA.
d. translate mRNA into polypeptides.
e. transcribe DNA into mRNA.: D
6. An mRNA molecule has 540 codons. It must haṿe at least
nu- cleotides.
a. 180
b. 270
c. 540
d. 1,080
e. 1,620: E
7. The three codons in the genetic code that do not specify amino
acids are called
, a. missense codons.
b. start codons.
