The function of PUF proteins binding to mRNA is:
A. a shortening of the poly(A) tail.
B. the phosphorylation of eIF2a.
C. the efficient recruitment of the 40S ribosomal subunit.
D. to block efficient translation.
The charging or activation of a tRNA molecule includes:
A. the covalent attachment of an amino acid to the 3'-terminal cytosine of the tRNA.
B. the covalent attachment of the amino group of an amino acid to the tRNA.
C. the covalent attachment of the carboxyl group of an amino acid to the tRNA.
D. the covalent attachment of an amino acid to the 5'-terminal adenosine of the tRNA.
The mRNA that would most likely have the longest half-life would:
A. containan exon junction complex bound downstream of a stop codon.
B. lack a stop codon.
C. containan AU-rich element in the 3'-UTR.
D. containone or more hairpin structures.
Which of the following is a correct pairing of a base to the product of its deamination?
A. thymidine uracil
B. cytosine thymine
C. adenine xanthine
D. guanine hypoxanthine
E. 5-methylcytosine thymine
When the gene that encodes the histones acetylase (HAT) was isolated, it was shown to have homology to the yeast protein, Gcn5 . Why was this an exciting find?
What will be an ideal response?
Quick Reply
