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Human Digestion and Nutrition

Questions covering the human digestive system, enzymes, organs, and nutrition basics for class XI biology

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following break down into amino acids during digestion?

  1. Carbohydrates
  2. Fats
  3. Fibres
  4. Proteins
Question 2 Multiple Choice (Single Answer)

Mohan’s grandmother has type-2 diabetes and she is very fond of eating sweets. Why is it harmful for her to have excess of sweets?

  1. She cannot digest sugar as her digestion is poor.
  2. Her pancreas is not healthy.
  3. Insulin is secreted in excess.
  4. Her blood sugar level is very low.
Question 3 Multiple Choice (Single Answer)

What is the function of liver?

  1. It produces bile juice.
  2. It produces the enzyme 'ptyalin'.
  3. It produces the enzyme 'rennin'.
  4. It helps in pushing the bulk of food into the alimentary canal.
Question 4 Multiple Choice (Single Answer)

Which of the following enzymes is not included in the enzyme group 'carbohydrases'?

  1. Amylase
  2. Maltase
  3. Lactase
  4. Sucrose
Question 5 Multiple Choice (Single Answer)

Proteins are made of

  1. hydrochloric acid
  2. amino acids
  3. fatty acids
  4. glucose
Question 6 Multiple Choice (Single Answer)

Cattles can digest cellulose easily because

  1. they chew it properly
  2. they have big stomach
  3. microbes in their rumen help in digesting
  4. microbes in their reticulum help in digesting
Question 7 Multiple Choice (Single Answer)

Which of the following organs prevents food from entering the windpipe?

  1. Glottis
  2. Uvula
  3. Epiglottis
  4. Tongue
Question 8 Multiple Choice (Single Answer)

Which of the following options changes the medium of food from acidic to alkaline?

  1. Gastric juice
  2. Lipase
  3. Bile juice
  4. Chymotrypsin
Question 9 Multiple Choice (Single Answer)

Which of the following symptoms is/are associated with diarrhoea?

  1. Ejection of stomach content through the mouth
  2. Retained faeces within the rectum due to irregular bowel movement
  3. Feeling of fullness and anxiety
  4. Abnormal bowel movement and faecal discharge with more liquidity
Question 10 Multiple Choice (Single Answer)

Small dextrins are

  1. short-chained branched amylopectin remains
  2. disaccharides formed from two units of glucose with á-(1-4) linkage
  3. disaccharides similar to maltose with á-(1-6) linkage
  4. low weight carbohydrates, produced by the hydrolysis of starch
Question 11 Multiple Choice (Single Answer)

Why does the skin appear yellow in jaundice?

  1. Liver gets infected, imparting yellow colour to the skin.
  2. Deposition of bile pigment causes the skin to be yellow.
  3. A jaundice patient becomes anaemic.
  4. The body becomes pale due to weakness.
Question 12 Multiple Choice (Single Answer)

Which of the following is not a characteristic of a balanced diet?

  1. It should provide enough raw materials for growth and development.
  2. It should provide necessary energy for the body.
  3. It should be grown at home.
  4. It should have all the essential nutrients.
Question 13 Multiple Choice (Single Answer)

Which of the following is not a type of human teeth?

  1. Incisor
  2. Canine
  3. Grinder
  4. Molar
Question 14 Multiple Choice (Single Answer)

Fats are resynthesised in

  1. bile duct
  2. villi
  3. appendix
  4. lacteal
Question 15 Multiple Choice (Single Answer)

The length of the human alimentary canal is

  1. 31 m
  2. 21 ft
  3. 21 m
  4. 31 ft
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