A) Dissociation constant B) The normal physiological substrate concentration C) The substrate concentration at half maximal velocity D) Numerically identical for all isoenzymes that catalyze a given reaction Answer (Select an option above to get the answer):
A) Represents primarily cholesterol that is being removed from peripheral cells B) Binds to a receptor and diffuses across the cell membrane C) On accumulation in the cell inhibits replenishment of LDL receptors D) When enters a cell, suppresses activity of acyl-CoA: cholesterol acyltransferase ACAT Answer (Select an option above to get the answer):
(Single Best Answer) Question 46: A newborn infant refuses breast milk since the 2nd day of birth, vomits on force-feeding but accepts glucose-water, develops diarrhoea on the third day, by the 5th day she is jaundiced with liver enlargement and eyes show signs of cataract. Urinary reducing sugar was positive but blood glucose estimated by glucose oxidation method was found low. The most likely cause is deficiency of ?
A) Galactose-1-phosphate uridyl transferase B) Beta galactosidase C) Glucose-6-phosphatase D) Galactokinase Answer (Select an option above to get the answer):
(Single Best Answer) Question 47: Various cells respond differently to a second messenger (such as increased cAMP) because they have different ?
A) Receptors B) Enzymatic composition C) Nuclei D) Membrane lipids Answer (Select an option above to get the answer):