MCQ Book Questions

Q51940. In eukaryotes, the 40 S pre-initiation complex contains all the following initiation factors except

Q51941. Eukaryotic initiation factors 4A, 4B and 4F bind to

Q51942. The codon which serves as translation start signal is

Q51943. The first amino acyl tRNA approaches 40 S ribosomal subunit in association with

Q51944. eIF-1A and eIF-3 are required

Q51945. eIF-4 A possesses

Q51946. eIF-4 B

Q51947. Peptidyl transferase activity is present in

Q51948. After formation of a peptide bond, mRNA is translocated along the ribosome by

Q51949. Binding of formylmehtionyl tRNA to 30 S ribosomal subunit of prokaryotes is inhibited by

Q51950. Tetracyclines inhibit binding of amino acyl tRNAs to

Q51951. Peptidyl transferase activity of 50 S ribosomal subunits is inhibited by

Q51952. Erythromycin binds to 50 S ribosomal sub unit and

Q51953. Puromycin causes premature chain termination in

Q51954. Diphtheria toxin inhibits

Q51955. The proteins destined to be transported out of the cell have all the following features except

Q51956. SRP receptors involved in protein export are present on

Q51957. The signal sequence of proteins is cleaved off

Q51958. The half-life of a protein depends upon its

Q51959. Besides structural genes that encode proteins, DNA contains some regulatory sequences which are known as