Protein Synthesis – Section 1

1. On the ribosome, mRNA binds

A. between the subunits
B. to the large subunit
C. to the small subunit
D. none of these

Correct Answer: C. to the small subunit

2. Type I proteins (plasma membrane) have a

A. cleavage N- terminal signal sequence and a hydrophobic stop transfer sequence
B. cleavaged N- terminal signal sequence that doubles as the membrane anchoring sequence
C. multiple signal sequence and a hydrophobic stop transfer sequence
D. multiple signal sequence that doubles as the membrane anchoring sequence

Correct Answer: A. cleavage N- terminal signal sequence and a hydrophobic stop transfer sequence

3. Which of the following is not a necessary component of translation?

A. Anticodon
B. mRNA
C. Ligase
D. Amino acid

Correct Answer: C. Ligase

4. A polysome could be best described as

A. an active site of DNA synthesis.
B. an active site of protein synthesis.
C. an active site of lipid synthesis.
D. all of the above.

Correct Answer: B. an active site of protein synthesis.

5. Eukaryotic mRNA binding to the ribosomes is facilitated by __________ .

A. the Shine Dalgarno sequence
B. the 7-methyl guanosine cap
C. tRNA
D. poly A tail

Correct Answer: B. the 7-methyl guanosine cap

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