Which enzyme hydrolyzes starch into maltose in the human digestive system? MCQ with Answer and Explanation

Question

Share Report Error

Which enzyme hydrolyzes starch into maltose in the human digestive system?

A. Pepsin

B. Salivary amylase

C. Lipase

D. Trypsin

Answer: Option B

Solution (By JKSSB Mock Tests)

Salivary amylase (ptyalin) is secreted by salivary glands and begins starch digestion in the mouth, hydrolyzing starch into maltose and dextrins. It works optimally at neutral to slightly alkaline pH. Pancreatic amylase continues starch digestion in the small intestine. Pepsin digests proteins, trypsin digests proteins in the intestine, and lipase digests fats. Salivary amylase action stops in the acidic stomach.

This question belongs to: Science Biology

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Biology Questions

Question #1

Share Report

Response to stimuli is a defining property of living organisms. Which of the following is true about this property?

A. All living organisms from prokaryotes to complex eukaryotes can sense and respond to stimuli

B. Only animals show response to stimuli

C. Response to stimuli is not seen in unicellular organisms

D. Plants do not respond to environmental factors

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
Consciousness or the ability to sense and respond to environmental stimuli is a defining property of all living organisms. Every organism, from simple prokaryotes to complex multicellular eukaryotes, can sense environmental factors like light, temperature, and chemicals. Plants also respond to light, gravity, and touch.

This question belongs to: Science Biology

Question #2

Share Report

The silkworm used in sericulture is the larva of:

A. Bombyx mori

B. Drosophila melanogaster

C. Labeo rohita

D. Apis mellifera

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
Bombyx mori is the domesticated silkworm, whose caterpillar spins a silk cocoon. The silk thread is obtained by boiling cocoons. Apis mellifera is the honeybee, Labeo rohita is a fish (rohu), Drosophila is fruit fly used in genetics. Sericulture involves mulberry cultivation, silkworm rearing, and reeling of silk. India is the second largest silk producer.

This question belongs to: Science Biology

Question #3

Share Report

The scientist who isolated the first antibiotic, penicillin, from Penicillium notatum was:

A. Howard Florey

B. Selman Waksman

C. Alexander Fleming

D. Ernst Chain

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
Alexander Fleming discovered penicillin in 1928. Florey and Chain later purified it and demonstrated its therapeutic potential. Waksman discovered streptomycin. The discovery of penicillin revolutionized medicine.

This question belongs to: Science Biology

Explore All Biology MCQs