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NEET • BIOLOGY • DIGESTION AND ABSORPTION

Digestion and absorption practice · Medium

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91 Medium

91 of 106

Analyzing +4 | -1

Go through the following statements regarding the absorption of nutrients. Identify wheather they are true or false then choose the correct option accordingly
I. Absorption of monosaccharides, alcohol, some water and medicines like aspirin occurs in the stomach
II.Fatty acids cannot be absorbed directly
III.Transport of water depends upon the osmotic gradient
IV.Maximum absorption of water (90%) takes place in the small intestine
V. Large intestine and mouth are not the site of absorption

View answer and explanation

Correct option: B

I, II, III are true while IV and V are false

Option B (I, II, III are true while IV and V are false) is correct because it correctly identifies the true and false statements regarding nutrient absorption.

92 Medium

92 of 106

Remembering +4 | -1

Which one of the following combination of vitamins are synthesised by bacteria?

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Correct option: A

Vitamin-

{B_{12}}

and K

Option A (Vitamin-

{B_{12}}

and K) is correct because bacteria in the gut synthesize both Vitamin B12 and Vitamin K.

93 Medium

93 of 106

Understanding +4 | -1

What is gastroporesis?

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Correct option: C

Delayed movement of food from the stomach to the small intestine

Option C (Delayed movement of food from the stomach to the small intestine) is correct because gastroparesis is characterized by a slowing or stopping of the movement of food from the stomach to the small intestine.

94 Medium

94 of 106

Remembering +4 | -1

Aggregates of lymphoid tissue present in the distal portion of the small intestine are known as

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Correct option: B

Peyer’s patches

Option B (Peyer’s patches) is correct because Peyer's patches are aggregates of lymphoid tissue found in the ileum (distal portion) of the small intestine, playing a role in immune surveillance.

95 Medium

95 of 106

Understanding +4 | -1

If pancreas is removed, the compound which remain undigested is

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Correct option: D

All of these.

Option D (All of these) is correct because the pancreas secretes enzymes for the digestion of proteins, carbohydrates, and fats. Without it, none of these can be properly digested.

96 Medium

96 of 106

Remembering +4 | -1

The amount of bile released is proportional to the amount of

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Correct option: A

Fat in meal

Option A (Fat in meal) is correct because the release of bile is primarily stimulated by the presence of fat in the meal.

97 Medium

97 of 106

Remembering +4 | -1

Which of the following animals eats its prey?

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Correct option: D

Both (b) and (c )

Option D (Both (b) and (c )) is correct because both starfish and sepia consume their prey whole.

98 Medium

98 of 106

Remembering +4 | -1

Deficiency of Vitamin-

{B_{12}}

causes

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Correct option: D

Pernicious anaemia

Option D (Pernicious anaemia) is correct because Vitamin B12 deficiency leads to impaired red blood cell production, resulting in pernicious anemia.

99 Medium

99 of 106

Understanding +4 | -1

As you know that HCl is highly acidic (1.5 to 2.0 pH) in the stomach, however, the epithelium of the mucosa remains unaffected/undissolved. Why?

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Correct option: C

Both (a) and (b )

Option C is correct because both the mucous lining and bicarbonate ions protect the stomach epithelium from the acidic environment.

100 Medium

100 of 106

Understanding +4 | -1

‘Digestion’ word means

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Correct option: C

Hydrolysis of food

Option C (Hydrolysis of food) is correct because digestion involves breaking down complex food molecules into simpler ones through hydrolysis.

101 Medium

101 of 106

Analyzing +4 | -1

Select the odd one w.r.t. location in mucosa of alimentary canal.

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Correct option: D

Brunner's gland

Option D (Brunner's gland) is the odd one out because it is located in the submucosa, while the others are found in the mucosa of the alimentary canal.

102 Medium

102 of 106

Application +4 | -1

Which of the following correctly represents the physiological value of following food which has 50 gm of carbohydrate, 30 gm of fat and 40 gm of protein

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Correct option: A

630 kcal

Option A (630 kcal) is correct because it is calculated by multiplying the grams of each macronutrient by its caloric value and summing the results.

103 Medium

103 of 106

Understanding +4 | -1

Which combination is not correctly matched?

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Correct option: C

Vitamin-

{B_2}

– Beri-beri

Option C (Vitamin-

{B_2}

– Beri-beri) is correct because Beri-beri is caused by a deficiency of Vitamin B1 (Thiamine), not Vitamin B2 (Riboflavin).

104 Medium

104 of 106

Analyzing +4 | -1

Study thoroughly the following statement and identify which of the following is/are correct and incorrect? I. Bile salt present in bile is responsible to emulsify the fats in small intestine II. Bicarbonates of sodium, potassium, glycocholate and taurocholate of sodium are bile salts III. The pH of hepatic bile is 8.6, while pH of gall bladder is 7.6 or 7.5 IV. The flow of bile from liver takes place through hepatic duct, common bile duct, -hepatopancreatic ampulla and finally to the first part of small intestine V. Gall bladder in rat and horse does not store bile Choose the correct option

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Correct option: C

Statement II and V are incorrect while, I, III and IV are correct

Option A (I, III and IV are incorrect, while II and V are correct) is correct because statements I, III, and IV contain inaccuracies regarding bile salt function, pH, and bile flow, respectively.

105 Medium

105 of 106

Understanding +4 | -1

Which is the correct chronological order for food processing in human beings?

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Correct option: A

Ingestion of food → Digestion → Absorption → Assimilation → Egestion (Undigested)

Option A (Ingestion of food → Digestion → Absorption → Assimilation → Egestion (Undigested)) is correct because it represents the correct sequence of food processing.

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106 Medium

106 of 106

Remembering +4 | -1

In horses, rabbits, hares, the cellulose gets digested in the

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Correct option: A

Caecum

Option A (Caecum) is correct because in horses, rabbits, and hares, the caecum is a large pouch that contains bacteria which help in the digestion of cellulose.

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