MCQs on Protein Synthesis
Q. This drug inhibits the initiation step of translation
(a) ricin
(b) tetracycline
(c) streptomycin
(d) cyclohexylamine
Answer: : (c)
Q. In translation, this is not an essential component
(a) amino acid
(b) ligase
(c) mRNA
(d) anticodon
Answer: : (b)
Q. This identifies a particular amino acid and its cognate tRNA molecule
(a) topoisomerase
(b) rRNA
(c) Ribosome
(d) tRNA synthetase
Answer: : (d)
Q. Protein synthesis corresponds to the process of
(a) duplicating required DNA for synthesis of proteins
(b) formation of amino acids from mRNA
(c) formation of mRNA from DNA template
(d) formation of amino acids from DNA template directly
Answer: : (b)
Q. This is considered to be the start codon
(a) AGG
(b) UAG
(c) GUG
(d) AUG
Answer: : (d)
Q. This best describes a polysome
(a) active site for synthesis of lipids
(b) active site for synthesis of proteins
(c) active site for synthesis of DNA
(d) all of these
Answer: : (b)
Q. In protein synthesis, translocation is initiated with the movement of
(a) tRNA from P-site to the A-site
(b) dipeptidyl tRNA from A-site to P-site
(c) tRNA from A-site to P-site
(d) tRNA from P-site to E-site
Answer: : (b)
Q. The process by which protein synthesis from genetic code occurs is best described by
(a) transcription
(b) translation
(c) replication
(d) reproduction
Answer: : (b)
Q. This is incorrect about the nature of genetic code.
Codons are
(a) universal
(b) overlapping
(c) commaless
(d) triplet
Answer: : (b)
Q. This elongation factor is known as translocase
(a) EFG
(b) EF2
(c) both (a) and (b)
(d) EF-Tu and EF-Ts
Answer: : (c)
