Which of the following diseases can be prevented by the BCG vaccine? MCQ with Answer and Explanation

Question
Which of the following diseases can be prevented by the BCG vaccine?
A. Measles
B. Poliomyelitis
C. Diphtheria
D. Tuberculosis
Answer: Option D
Solution (By JKSSB Mock Tests)
BCG (Bacille Calmette-Guérin) is a live attenuated vaccine derived from Mycobacterium bovis, used against tuberculosis, primarily in children. Polio vaccine (OPV/IPV) prevents poliomyelitis, DPT prevents diphtheria, pertussis, tetanus, and MMR prevents measles, mumps, rubella. BCG is often administered at birth in TB-endemic countries.
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Question #1
The hormone that inhibits the secretion of gastric juice is:
A. Secretin
B. Gastrin
C. Gastric inhibitory peptide
D. Cholecystokinin
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Correct Answer: Option C

Explanation:
GIP (glucose-dependent insulinotropic peptide) is released from the small intestine in response to fat and glucose, inhibiting gastric secretion and motility. Gastrin stimulates acid secretion, secretin stimulates bicarbonate, CCK stimulates gallbladder contraction.
This question belongs to: Science Biology
Question #2
The enzyme that converts angiotensinogen to angiotensin I is:
A. Pepsin
B. Renin
C. Trypsin
D. ACE (angiotensin-converting enzyme)
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Correct Answer: Option B

Explanation:
Renin, released by juxtaglomerular cells of the kidney when blood pressure drops, cleaves angiotensinogen (from liver) to angiotensin I. ACE then converts angiotensin I to the active angiotensin II, a potent vasoconstrictor and stimulator of aldosterone. Pepsin and trypsin are digestive proteases.
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Question #3
The vitamin that is required for the formation of collagen and wound healing is:
A. Vitamin A
B. Vitamin D
C. Vitamin E
D. Vitamin C
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Correct Answer: Option D

Explanation:
Vitamin C is a cofactor for prolyl and lysyl hydroxylases, enzymes essential for collagen cross-linking and stability. Deficiency impairs wound healing and causes scurvy. Vitamin A is for epithelial integrity.
This question belongs to: Science Biology
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