Ribosomes and Protein Synthesis

Review Questions

The RNA components of ribosomes are synthesized in the ________.

  1. cytoplasm
  2. nucleus
  3. nucleolus
  4. endoplasmic reticulum

Hint:

C

In any given species, there are at least how many types of aminoacyl tRNA synthetases?

  1. 20
  2. 40
  3. 100
  4. 200

Hint:

A

A scientist introduces a mutation that makes the 60S ribosomal subunit nonfunctional in a human cell line. What would be the predicted effect on translation?

  1. Translation stalls after the initiation AUG codon is identified.
  2. The ribosome cannot catalyze the formation of peptide bonds between the tRNAs in the A and P sites.
  3. The ribosome cannot interact with mRNAs.
  4. tRNAs cannot exit the E site of the ribosome.

Hint:

A