Question

The chief function of bile is to

• A. Digest fat by enzymatic action
• B. Emulsify fats for digestion
• C. Elimination wast products
• D. Regulate digestion of proteins

Answer 1

The correct option is B

Emulsify fats for digestion

The correct option is B:

The explanation for the correct option:

Option B:

1. The digestion of lipids depends heavily on bile.
2. Fats are emulsified by bile.
3. The surface area on which the lipase enzyme can function will grow due to emulsification.
4. A quicker pace of reaction results from the larger surface area.
5. Simply because bile activity on fats causes digestion of fats to begin and terminate in the small intestine.

The explanation for the Incorrect option:

Option A:

1. In the process of breaking down food, enzymes are crucial.
2. A given dietary substrate is broken down into simpler compounds by the specific enzyme acting on it.
3. Given their complexity and requirement to be alcohol soluble, lipids among the seven components of food take the longest to digest.
4. Although the fat molecule is larger than the lipase molecule, the enzyme can still operate on fats.

Option C:

1. Waste materials are eliminated by a variety of organs, including the skin, lungs, kidneys, and liver.

Option D:

1. Numerous enzymes are involved in the digestion process, and for the enzymes to function, the right pH and temperature are necessary.
2. Enzyme activity goes hand in hand with the control of digestion.

Final answer: The chief function of bile is to emulsify fats for digestion.