How does the ribosome recognize the proper tRNA to bind? a. The enzyme peptidyl

Question

How does the ribosome recognize the proper tRNA to bind? a. The enzyme peptidyl transferase allows only the appropriate tRNA to bind the A-site. b. An elongation factor recognizes the tRNA and aids its binding though GTP hydrolysis. c. Only tRNA with an anticodon that is complementary to the codon will bind in the A site. d. Only a tRNA carrying the amino acid that is complementary to the amino acid in the P site will bind the A site. Which of the following best describes a difference for "free" ribosomes compared to ribosomes bound to the rough endoplasmic reticulum? a. Free ribosomes are located in the nucleus while bound ribosomes are attached to the rough endoplasmic reticulum Free ribosomes produce proteins that remain in the cytosol while bound ribosomes produce proteins exported from the cell. b. Free ribosomes remain in the cytoplasm of the cell while bound ribosomes are exported out of the cell. c. There is no difference between free ribosomes and bound ribosomes.

Explanation / Answer

ANSWER:

15)d. only a t-RNA carrying the aminoacid that is complementary to the aminoacid in the p site will bind a site .

16) b.Free ribosomes remain in cytoplasm of the cell while bound ribosomes are exported out of the cell.

Free ribosomes are present in cytoplasm of cell and bound ribosomes attached to the rough endoplasmic reticulum.

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