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Medical Science Mcqs 5254 MCQs [All-Courses]

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Medical Science is the study of human health, diseases, prevention, and treatment, focusing on diagnosis, patient care, and medical research to improve healthcare outcomes.

All Topics  5254

Megnesium is needed for the activity of which enzymes ?
A Phosphatase
B Aldolase
C Dismutase
D ATPase
Correct Answer: ATPase
When the prosthetic group of an enzyme is an inorganic ion, it is called a_____________?
A Cofactor
B Coenzyme
C Apoenzyme
D Holoenzyme
Correct Answer: Cofactor
Coenzyme, in an enzymatic reaction usually functions to_____________?
A Activate the substrate
B Increase the active sites of apoenzyme
C Enhance the specificity of apoenzyme
D Accept one of the cleavage products
Correct Answer: Accept one of the cleavage products
The most common enzyme deficiency in man is___________?
A Glucose 6 phosphate dehydrogenase
B Glucose 6 phosphatase
C Hexokinase
D Glucose 1,6 diphosphatase
Correct Answer: Glucose 6 phosphate dehydrogenase
Enzymes concerned with the citric acid cycle are found in______________?
A Nucleus
B Mitochondria
C Ribosomes
D Non-particulate cytoplasm
Correct Answer: Mitochondria
Serum alkaline phosphatase level increase in_______________?
A Hypothyroidism
B Carcinoma of prostate
C Hyperparathyroidism
D Myocardial infarction
Correct Answer: Hyperparathyroidism
The enzyme that splits hydrogen peroxide into water and oxygen is_____________?
A Cytochromes
B Cytochrome P 450
C Super oxide dismutase
D Catalase
Correct Answer: Catalase
Enzyme that catalyses the transfer of a molecule group from one molecule to another is_____________?
A Oxidases
B Peptidases
C Transferases
D LIpases
Correct Answer: Transferases
The activity of this plasma enzyme is responsible virtually for all plasma cholesterol esters in humans_______________?
A Lecithin cholesterol acyl transferase (LCAT)
B Pyrophospho mevalonate decarboxylase
C HMG CoA reductase
D Phospho mevalonate kinase
Correct Answer: Lecithin cholesterol acyl transferase (LCAT)
Enzymes are classified according to_________________?
A Action on substrate
B Action of coenzymes
C Nature of the enzymes
D All of the above
Correct Answer: Action on substrate
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