The enzyme that catalyzes the conversion of starch into maltose is: MCQ with Answer and Explanation

The enzyme that catalyzes the conversion of starch into maltose is:
A. Lipase
B. Protease
C. Lactase
D. Amylase
Answer: Option D
Solution (By JKSSB Mock Tests)
Amylase (ptyalin in saliva, pancreatic amylase in intestine) hydrolyzes starch (a polysaccharide) into maltose (a disaccharide) and dextrins. Lactase breaks lactose, lipase digests lipids, protease digests proteins. Salivary amylase works at neutral pH, pancreatic amylase in the small intestine. Maltase then breaks maltose into two glucose molecules.

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Question #1
The disease caused by the tapeworm Taenia solium is:
A. Trichinosis
B. Taeniasis
C. Filariasis
D. Ascariasis

Correct Answer: Option B


Explanation:
Taeniasis is intestinal infection with adult Taenia solium (pork tapeworm). Cysticercosis is when larvae infect tissues. Ascariasis is roundworm, filariasis nematode, trichinosis Trichinella.

This question belongs to: Science Biology
Question #2
The organ that produces digestive enzymes and insulin is the:
A. Liver
B. Spleen
C. Pancreas
D. Gall bladder

Correct Answer: Option C


Explanation:
The pancreas is a mixed gland: exocrine acini secrete digestive enzymes (trypsin, lipase, amylase) into the duodenum, while endocrine islets secrete insulin and glucagon into the blood. The liver produces bile, not digestive enzymes. Spleen filters blood, gall bladder stores bile.

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Question #3
Consider statements about human immunity: 1. Colostrum provides passive immunity to infants. 2. Allergies are exaggerated immune responses. 3. Autoimmune diseases occur when the immune system attacks self-cells. Which are correct?
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Correct Answer: Option B


Explanation:
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