(Single Best Answer) Question 101: A young man finds that every time he eats dairy products he feels very uncomfortable. His stomach becomes distended. He develops gas and diarrhea frequently. These symptoms do not appear when he eats foods other than dairy products. Which of the following is the most likely enzyme in which this young man is deficient?
A) alpha - amylase B) beta - galactosidase C) alpha- glucosidase D) Sucrase Answer (Select an option above to get the answer):
A) Intron B) Exon C) Plasmid D) TATA Box Answer (Select an option above to get the answer):
(Single Best Answer) Question 103: An enzyme that makes a double stranded DNA copy from a single stranded RNA template molecule is known as?
A) DNA polymerase B) RNA polymerase C) Reverse transcriptase D) Phosphokinase Answer (Select an option above to get the answer):
(Single Best Answer) Question 104: A small Ca2+ binding protein that modifies the activity of many enzymes and other proteins in response to changes of Ca2+ concentration, is known as?
A) Cycline B) Calmodulin C) Collagen D) Kinesin Answer (Select an option above to get the answer):
(Single Best Answer) Question 105: Which of the following is a membrane bound enzyme that catalyzes the formation of cyclic AMP from ATP?
A) Tyrosine kinase B) Polymerase C) ATP synthase D) Adenylate cyclase Answer (Select an option above to get the answer):
A) Albinism B) Niemann Pick disease C) Metachromatic leukodystrophy D) Gaucher disease Answer (Select an option above to get the answer):
(Single Best Answer) Question 108: Which of the following substances acts to increase the release of Ca2++ from endoplasmic reticulum?
A) Inositol triphosphate B) Parathyroid hormone C) 1,25-dihydroxycholecalciferol D) Diacylglycerol Answer (Select an option above to get the answer):
(Single Best Answer) Question 109: The type of enzyme inhibition (in which succinate dehydrogenase reaction is inhibited by malonate) is an example of ?
A) Noncompetitive B) Uncompetitive C) Competitive D) Allosteric Answer (Select an option above to get the answer):
(Single Best Answer) Question 110: In a solution the concentration of hydrogen ion [H+] is 1 Ã? 10 6 moles/litre. The pH of the solution will be ?
A) Three B) Six C) Nine D) Twelve Answer (Select an option above to get the answer):