Which of the following amino acids is quickly converted to tyrosine ?
(A) Arginine
(B) Glycine
(C) Phenylalanine
(D) Leucine
Histidine is converted to histamine by_____________?
(A) Transamination
(B) Hydroxylation
(C) Decarboxylation
(D) Reduction
A mutation that converts an amino acid codon to a stop codon is a_____________?
(A) Nonsense mutation
(B) Transversion
(C) Silent mutation
(D) Frame shift mutation
Decarboxylation of which of the following amino acids results in formation of a vasodilator ?
(A) Valine
(B) Arginine
(C) Histidine
(D) Glutamic acid
A small Ca+2 binding protein that modifies the activity of many enzymes and other proteins in response to changes of Ca+2 concentration is known as______________?
(A) Cycline
(B) Calmodulin
(C) Collagen
(D) Kinesin
Ammonia is detoxified in liver to form____________?
(A) Uric acid
(B) Glutamine
(C) Creatinine
(D) Urea
Key enzyme in urea synthesis is____________?
(A) Urease
(B) Carbamyl synthetase
(C) Arginase
(D) Ornithine
Quaternary structure of protein is_____________?
(A) The arrangement sequence of amino acids in the polypeptide chain
(B) Inter relation between amino acids in a single polypeptide chain
(C) Inter relation of amino acids in 2 polypeptide chains
(D) The inter relation and arrangement of polypeptides in a protein with more than 2 polypeptide chains
Glycine is present in____________?
(A) Hemoglobin
(B) Glutathione
(C) Purines
(D) Creatine
(D) All of the above