Biochem Testbank GENE EXPRESSION AND PROTEIN SYNTHESIS
Review Question with Answers
Which of the following occurs in retroviruses?
a. DNA is replicated in the 3' → 5' direction
b. DNA is replicated in the 5' → 3' direction
c. DNA is transcribed to RNA
d. RNA is transcribed to DNA - correct answersD
HIV, the retrovirus which causes AIDS, does which of the following?
a. uses reverse transcriptase to synthesize DNA
b. uses RNA replicase replicate it own RNA
c. both a and b
d. neither a nor b - correct answersA
A sequence of how many bases is needed to code for an amino acid?
a. 1 c. 3
b. 2 d. 4 - correct answersC
In eukaryotes which of the following is true?
a. Transcription always occurs in the nucleus.
b. Transcription never occurs in the nucleus.
c. Translation always occurs in the nucleus.
d. Translation never occurs in the nucleus. - correct answersA
In eukaryotes which of the following is true?
a. Transcription never occurs in the nucleus.
b. Translation always occurs in the nucleus.
c. Translation sometimes occurs in the nucleus.
d. Translation never occurs in the nucleus. - correct answersC
,Which of the following is true?
a. We know more about transcription and translation in eukaryotes than about these
processes in prokaryotes.
b. We know more about transcription and translation in prokaryotes than about these
processes in eukaryotes.
c. We know the same amount about transcription and translation in prokaryotes eukaryotes.
d. The processes of transcription and translation are identical in eukaryotes and prokaryote. - correct
answersB
Which of the following is involved in making the DNA less dense and more accessible?
a. acetylase c. binding proteins
b. helicase d. polymerases - correct answersC
Which of the following is involved in unwinding the DNA double helix?
a. acetylase c. binding proteins
b. helicase d. polymerases - correct answersB
Which of the following is true during transcription?
a. Both strands of DNA serve as a template for RNA.
b. Only the antisense strand of DNA serves as a template for RNA.
c. Only the sense strand of DNA serves as a template for RNA.
d. Transcription involves merging information from both strands of DNA. - correct answersB
Which of the following has a sequence that serves as a template for the RNA being produced?
a. the DNA coding strand c. the DNA (+ ) strand
b. the DNA (−) strand d. the DNA sense strand - correct answersB
Which of the following has a sequence that matches that of the RNA being produced?
, a. the DNA antisense strand c. the DNA sense strand
b. the DNA (−) strand d. the DNA template strand - correct answersC
Which base will be added to the growing mRNA if the base on the DNA template is adenine?
a. cytosine c. thymine
b. guanine d. uracil - correct answersD
In eukaryotes how many polymerases catalyze transcription?
a. 1 c. 3
b. 2 d. 4 - correct answersC
RNA polymerase I (pol I) catalyzes the formation of which type of RNA?
a. mRNA c. snRNA
b. rRNA d. tRNA - correct answersB
RNA polymerase II (pol II) catalyzes the formation of which type of RNA?
a. mRNA c. snRNA
b. rRNA d. tRNA - correct answersA
Which portion of a eukaryotic gene carries information which will be transcribed to the RNA?
a. the entire gene c. the regulatory portion
b. the promoter d. the structural gene - correct answersD
Where in the gene is the promoter located?
a. in the exons c. in the regulatory portion
b. in the introns d. It can be in any of these. - correct answersC
Which of the following is true?
a. There is a single promoter for all genes.
Review Question with Answers
Which of the following occurs in retroviruses?
a. DNA is replicated in the 3' → 5' direction
b. DNA is replicated in the 5' → 3' direction
c. DNA is transcribed to RNA
d. RNA is transcribed to DNA - correct answersD
HIV, the retrovirus which causes AIDS, does which of the following?
a. uses reverse transcriptase to synthesize DNA
b. uses RNA replicase replicate it own RNA
c. both a and b
d. neither a nor b - correct answersA
A sequence of how many bases is needed to code for an amino acid?
a. 1 c. 3
b. 2 d. 4 - correct answersC
In eukaryotes which of the following is true?
a. Transcription always occurs in the nucleus.
b. Transcription never occurs in the nucleus.
c. Translation always occurs in the nucleus.
d. Translation never occurs in the nucleus. - correct answersA
In eukaryotes which of the following is true?
a. Transcription never occurs in the nucleus.
b. Translation always occurs in the nucleus.
c. Translation sometimes occurs in the nucleus.
d. Translation never occurs in the nucleus. - correct answersC
,Which of the following is true?
a. We know more about transcription and translation in eukaryotes than about these
processes in prokaryotes.
b. We know more about transcription and translation in prokaryotes than about these
processes in eukaryotes.
c. We know the same amount about transcription and translation in prokaryotes eukaryotes.
d. The processes of transcription and translation are identical in eukaryotes and prokaryote. - correct
answersB
Which of the following is involved in making the DNA less dense and more accessible?
a. acetylase c. binding proteins
b. helicase d. polymerases - correct answersC
Which of the following is involved in unwinding the DNA double helix?
a. acetylase c. binding proteins
b. helicase d. polymerases - correct answersB
Which of the following is true during transcription?
a. Both strands of DNA serve as a template for RNA.
b. Only the antisense strand of DNA serves as a template for RNA.
c. Only the sense strand of DNA serves as a template for RNA.
d. Transcription involves merging information from both strands of DNA. - correct answersB
Which of the following has a sequence that serves as a template for the RNA being produced?
a. the DNA coding strand c. the DNA (+ ) strand
b. the DNA (−) strand d. the DNA sense strand - correct answersB
Which of the following has a sequence that matches that of the RNA being produced?
, a. the DNA antisense strand c. the DNA sense strand
b. the DNA (−) strand d. the DNA template strand - correct answersC
Which base will be added to the growing mRNA if the base on the DNA template is adenine?
a. cytosine c. thymine
b. guanine d. uracil - correct answersD
In eukaryotes how many polymerases catalyze transcription?
a. 1 c. 3
b. 2 d. 4 - correct answersC
RNA polymerase I (pol I) catalyzes the formation of which type of RNA?
a. mRNA c. snRNA
b. rRNA d. tRNA - correct answersB
RNA polymerase II (pol II) catalyzes the formation of which type of RNA?
a. mRNA c. snRNA
b. rRNA d. tRNA - correct answersA
Which portion of a eukaryotic gene carries information which will be transcribed to the RNA?
a. the entire gene c. the regulatory portion
b. the promoter d. the structural gene - correct answersD
Where in the gene is the promoter located?
a. in the exons c. in the regulatory portion
b. in the introns d. It can be in any of these. - correct answersC
Which of the following is true?
a. There is a single promoter for all genes.
