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Biochem Testbank | GENE EXPRESSION AND PROTEIN SYNTHESIS Revision Questions with Answers

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Biochem Testbank | GENE EXPRESSION AND PROTEIN SYNTHESIS Revision Questions with Answers 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 prokaryo...

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  • July 24, 2024
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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.

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