What role does hydrochloric acid play in protein digestion in the stomach?

It emulsifies fats into smaller droplets.

It activates pepsinogen into pepsin.

It breaks down starch into sugars.

It neutralizes bile in the duodenum.

How does bile aid in fat digestion in the small intestine?

By neutralizing hydrochloric acid from the stomach.

By breaking down fats into fatty acids and glycerol.

By emulsifying large fat droplets into smaller ones.

What is the primary function of amylase in the digestive system?

To digest proteins into amino acids.

To break down fats into fatty acids and glycerol.

To convert starch into maltose.

Why is the acidic environment in the stomach important for digestion?

It helps in the breakdown of fats.

It activates pepsinogen and facilitates protein digestion.

What happens during the absorption stage of digestion?

Large food molecules are broken down into smaller ones.

Nutrients and ions are moved from the intestinal wall into the bloodstream.

Undigested food is eliminated from the body.

Proteins are converted into amino acids.

How does pepsin contribute to protein digestion in the stomach?

By breaking down starch into glucose.

By emulsifying fats into smaller droplets.

By breaking down proteins into peptides.

What is the purpose of bicarbonate secretion in the stomach?

To buffer the acidic environment and protect stomach tissue.

To aid in the absorption of nutrients.

Chemical Digestion Free MCQ Practice Test with Solutions

	Biology for GCSE/IGCSE 110 videos\|158 docs\|34 tests

	Biology for GCSE/IGCSE 110 videos\|158 docs\|34 tests

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