401. Which step causes activation of catalytic site of an enzyme__________________?
A. Change in pH of the surroundings.
B. Formation of Enzyme Susstrate complex.
C. Change in the charge of the active site.
D. Change in temperature

402. Amoeboid movements and movement of cyclosis is due to_________?
A. Microfilaments
B. Microtubules
C. Intermediate filaments
D. Cytoskeleton

403. Enzymes __________________ the activation energy of a chemical reaction?
A. Increases
B. Decreases
C. Does not effect
D. Increases or decreases depending upon individual enzyme

404. Which one forms the raw material for coenzymes_______________________?
A. Vitamins
B. Carbohydrates
C. Proteins
D. Metals

405. Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates by___________?
A. Ribosomes
B. Cytoplasm
C. Golgi apparatus
D. Endoplasmic reticulum

406. Biological molecules (proteins) which catalyze a biochemical reaction and remain unchanged after completion of reaction are called_____________________?
A. Cofactor
B. Coenzymes
C. Activator
D. Enzymes

407. In which of the following location enzymes controlling cellular respiration are present____________?
A. Nucleus
B. Chlorophast
C. Milochondria
D. Ribosome

408. In golgi apparatus the maturing face is____________?
A. Biconcave
B. Convex
C. Spherical
D. Concave

409. A cofactor made of inorganic ion which is detachable is called__________________?
A. Prosthetic group
B. Coenzyme
C. Activator
D. Cofactor

410. An activated enzyme consisting of polypeptide chain and a cofactor is called_______________?
A. Apoenzyme
B. Holoenzyme
C. Activated enzyme
D. Both b and c

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