A) Binds the antibiotic Rifampicin B) Is inhibited by á-amanitin C) Specifically recognizes the promoter site D) Is part of the core enzyme Answer (Select an option above to get the answer):
A) mRNA B) tRNA C) rRNA D) snRNA Answer (Select an option above to get the answer):
(Single Best Answer) Question 78: There are more than 300 variants of human hemoglobin gene. Among these only a few are fatal. Hence, the most important factor to be conserved in a protein for its function is the ?
A) Amino acid sequence B) Ligand binding residues C) Structure D) Environment Answer (Select an option above to get the answer):
(Single Best Answer) Question 79: Proteins are linear polymers of amino acids. They fold into compact structures. Sometimes, these folded structures associate to form homo- or hetero-dimers. Which one of the following refers to this associated form ?
A) Denatured state B) Molecular aggregation C) Precipitation D) Quaternary Structure Answer (Select an option above to get the answer):
(Single Best Answer) Question 80: Which one of the following can be a homologous substitution for isoleucine in a protein sequence ?
A) Methionine B) Aspartic acid C) Valine D) Arginine Answer (Select an option above to get the answer):