Discussion
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- Question
On the ribosome, mRNA binds
Options- A. between the subunits
- B. to the large subunit
- C. to the small subunit
- D. none of these
- Correct Answer
- to the small subunit
- 1. A polysome could be best described as
Options- 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. Discuss
- 2. Which of the following RNAs bind to an amino acid?
Options- A. mRNA
- B. tRNA
- C. rRNA
- D. hnRNA Discuss
- 3. The first step in translation is
Options- A. binding of the two ribosomal subunits to each other
- B. binding of mRNA to the two ribosomal subunits
- C. binding of tRNA to the small ribosomal subunit
- D. binding of mRNA to the small ribosomal subunit Discuss
- 4. Proteins contain __________ different amino acids, whereas DNA and RNA are composed of __________ different nucleotides
Options- A. 20,64
- B. 3,20
- C. 4,20
- D. 20,4 Discuss
- 5. The pathway of a tRNA during polypeptide elongation on the ribosome is
Options- A. A site ? P site ? E site
- B. P site ? entry site ? exit site
- C. A site ? P site ? entry site
- D. P site ? A site ? E site Discuss
- 6. Type I proteins (plasma membrane) have a
Options- 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 Discuss
- 7. Which site of the tRNA molecule binds to the mRNA molecule?
Options- A. Anticodon
- B. Codon
- C. Amino acid
- D. 5 prime end Discuss
- 8. The growing polypeptide chain is released from the ribosomes when
Options- A. a chain terminating codon is reached
- B. a chain terminating tRNA binds to the ribosome
- C. the 7-methyl guanosine cap is reached
- D. the poly A tail is reached Discuss
- 9. Signal peptide protein removal that is translocated across a membrane is accomplished by
Options- A. fMet aminopeptidase
- B. trypsin
- C. signal peptidase
- D. chymotrypsin Discuss
- 10. The structure in a bacterium that indicates an active site for protein synthesis is
Options- A. a chromosome.
- B. a cell membrane,
- C. a flagellum.
- D. a polysome. Discuss
Protein Synthesis problems
Search Results
Correct Answer: an active site of protein synthesis.
Correct Answer: tRNA
Correct Answer: binding of mRNA to the small ribosomal subunit
Correct Answer: 20,4
Correct Answer: A site ? P site ? E site
Correct Answer: cleavage N- terminal signal sequence and a hydrophobic stop transfer sequence
Correct Answer: Anticodon
Correct Answer: a chain terminating codon is reached
Correct Answer: signal peptidase
Correct Answer: a polysome.
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