A unique by-product of glycolysis in erythrocytes is 

(A) Lactate 

(B) 1, 3-Biphosphoglycerate 

(C) 2, 3-Biphosphoglycerate 

(D) All of these

Key and lock hypothesis of enzyme action was given by 

(A) Fischer 

(B) Koshland 

(C) Buchner 

(D) Kuhne

The amino alcohol sphingosine is synthesized in 

(A) Mitochondria 

(B) Cytosol 

(C) Nucleus 

(D) Endoplasmic reticulum

Dry seeds endure higher temperature than germinating seeds as 

(A) Hydration is essential for making enzymes sensitive to temperature 

(B) Dry seeds have a hard covering

(C) Dry seeds have more reserve food 

(D) Seedlings are tender

Who suggested that enzymes are proteinaceous? 

(A) Buchner 

(B) Kuhne 

(C) Sumner 

(D) Pasteur 

Glucose cannot be synthesized from 

(A) Glycerol 

(B) Lactate 

(C) Alanine 

(D) Leucine 

Enzymes, vitamins and hormones are common in 

(A) Being proteinaceous 

(B) Being synthesized in the body of organisms 

(C) Enhancing oxidative metabolism 

(D) Regulating metabolism

What is the action mechanism of the antiretroviral drugs called protease inhibitors which are used against HIV infection? 

Physostigmine is a competitive inhibitor of 

(A) Xanthine oxidase 

(B) Cholinesterase 

(C) Carbonic anhydrase 

(D) Monoamine oxidase

The harmone acting directly on intestinal mucosa and stimulating glucose absorption is 

(A) Insulin 

(B) Glucagon 

(C) Thyroxine 

(D) Vasopressin