Question: Megnesium is needed for the activity of which enzymes ?

• 1. Phosphatase
• 2. Aldolase
• 3. Dismutase
• 4. ATPase

Question: When the prosthetic group of an enzyme is an inorganic ion, it is called a_____________?

• 1. Cofactor
• 2. Coenzyme
• 3. Apoenzyme
• 4. Holoenzyme

Question: Coenzyme, in an enzymatic reaction usually functions to_____________?

• 1. Activate the substrate
• 2. Increase the active sites of apoenzyme
• 3. Enhance the specificity of apoenzyme
• 4. Accept one of the cleavage products

Question: The most common enzyme deficiency in man is___________?

• 1. Glucose 6 phosphate dehydrogenase
• 2. Glucose 6 phosphatase
• 3. Hexokinase
• 4. Glucose 1,6 diphosphatase

Question: Enzymes concerned with the citric acid cycle are found in______________?

• 1. Nucleus
• 2. Mitochondria
• 3. Ribosomes
• 4. Non-particulate cytoplasm

Question: Serum alkaline phosphatase level increase in_______________?

• 1. Hypothyroidism
• 2. Carcinoma of prostate
• 3. Hyperparathyroidism
• 4. Myocardial infarction

Question: The enzyme that splits hydrogen peroxide into water and oxygen is_____________?

• 1. Cytochromes
• 2. Cytochrome P 450
• 3. Super oxide dismutase
• 4. Catalase

Question: Enzyme that catalyses the transfer of a molecule group from one molecule to another is_____________?

• 1. Oxidases
• 2. Peptidases
• 3. Transferases
• 4. LIpases

Question: The activity of this plasma enzyme is responsible virtually for all plasma cholesterol esters in humans_______________?

• 1. Lecithin cholesterol acyl transferase (LCAT)
• 2. Pyrophospho mevalonate decarboxylase
• 3. HMG CoA reductase
• 4. Phospho mevalonate kinase

Question: Enzymes are classified according to_________________?

• 1. Action on substrate
• 2. Action of coenzymes
• 3. Nature of the enzymes
• 4. All of the above