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Digestion and Absorption · Question 53

AIPMT 2003MCQEasy📈 Topic in 12% papers+4−1
1

During prolonged fasting, in what sequence are the following organic compounds used up by the body?

  1. First carbohydrates, next fats and lastly proteins
  2. First fats, next carbohydrates and lastly proteins
  3. First carbohydrates, next proteins and lastly lipids
  4. First proteins, next lipids and lastly carbohydrates

Answer

(1) First carbohydrates, next fats and lastly proteins

Solution

During fasting, the body first uses the readily available carbohydrates (blood glucose and the small glycogen reserve of liver and muscles).

⇒ When glycogen is exhausted, stored fats (adipose tissue) are broken down for energy.

⇒ Proteins (structural and functional molecules) are used only at the last, during starvation.

∴ Sequence: carbohydrates → fats → proteins.

Answer: (1)

Out of syllabusAIPMT 2003

Keep practising — Digestion and Absorption

2

Stool of a person is whitish grey coloured due to malfunction of which of the following organs?

  1. Pancreas
  2. Spleen
  3. Kidney
  4. Liver
Out of syllabusAIPMT 2002
3

Hydrolytic enzymes which act at low pH are called

  1. proteases
  2. -amylases
  3. hydrolases
  4. peroxidases.
Out of syllabusAIPMT 2002
4

Which one of the following is correctly matched?

  1. Vitamin E – Tocopherol
  2. Vitamin D – Riboflavin
  3. Vitamin B – Calciferol
  4. Vitamin A – Thiamine
Out of syllabusAIPMT 2001
5

In mammals milk is digested by the action of

  1. rennin
  2. amylase
  3. intestinal bacteria
  4. invertase
Out of syllabusAIPMT 2000
6

A person is eating boiled potato; his food contains the component

  1. cellulose which is digested by cellulase
  2. starch which is not digested
  3. lactose which is not digested
  4. DNA which can be digested by pancreatic DNase
Out of syllabusAIPMT 2000

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