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NEET • BIOLOGY • DIGESTION AND ABSORPTION
Digestion and absorption practice · Mixed difficulty
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61
Medium
61 of 255
Remembering
+4 | -1
What is the composition of bile?
View answer and explanation
Correct option: D
All of the above
The correct answer is D (All of the above) because bile contains bile pigments (bilirubin and biliverdin), bile salts (sodium glycocholate and sodium taurocholate), cholesterol, and phospholipids.
62
Medium
62 of 255
Remembering
+4 | -1
Which part of our body secretes the hormone secretin?
View answer and explanation
Correct option: C
Duodenum
Option C (Duodenum) is correct because the hormone secretin is secreted by the duodenum in response to acidic chyme.
63
Hard
63 of 255
Understanding
+4 | -1
Consider the following statements.
I. The anti-pellagra vitamin is nicotinamide present in milk, yeast, meat and leafy
vegetables.
II. Crypts of Leiberkuhn are present in the liver.
III. Steapsin is the pancreatic amylase.
I. The anti-pellagra vitamin is nicotinamide present in milk, yeast, meat and leafy
vegetables.
II. Crypts of Leiberkuhn are present in the liver.
III. Steapsin is the pancreatic amylase.
View answer and explanation
Correct option: D
II and III incorrect
Option D (II and III incorrect) is correct because Crypts of Lieberkuhn are present in the intestine, not the liver, and steapsin is pancreatic lipase, not amylase.
64
Medium
64 of 255
Understanding
+4 | -1
Choose an incorrect statement regarding the functions of large intestine
View answer and explanation
Correct option: B
Absorption of electrolytes, water and some amino acids occur mainly in the stomach
Option B is correct because the absorption of electrolytes, water, and some amino acids occurs mainly in the small intestine, not the stomach.
65
Easy
65 of 255
Understanding
+4 | -1
Which of the following is not the function of large intestine?
View answer and explanation
Correct option: B
Nutrient absorption
Option B (Nutrient absorption) is correct because the primary function of the large intestine is water absorption, not nutrient absorption.
66
Medium
66 of 255
Understanding
+4 | -1
Inadequate protein intake leads to kwashiorkor. The subsequent oedema is most closely related to inadequate synthesis of which protein?
View answer and explanation
Correct option: D
Albumin
Option D (Albumin) is correct because inadequate protein intake leads to reduced albumin synthesis, causing decreased oncotic pressure and subsequent oedema in kwashiorkor.
67
Medium
67 of 255
Analyzing
+4 | -1
Assertion: Volume and fluidity of intestinal
contents have increased in a person.
Reason: The person drank sea water.
contents have increased in a person.
Reason: The person drank sea water.
View answer and explanation
Correct option: A
If both Assertion and Reason are true and
Reason is the correct explanation of Assertion
Reason is the correct explanation of Assertion
Option A (If both Assertion and Reason are true and Reason is the correct explanation of Assertion) is correct because drinking seawater increases the solute concentration in the intestine, drawing water into the lumen and increasing volume and fluidity.
68
Easy
68 of 255
Remembering
+4 | -1
The digestion of starch by amylase is completed in the
View answer and explanation
Correct option: D
Duodenum
Option D (Duodenum) is correct because the duodenum is the primary site for starch digestion by pancreatic amylase.
69
Hard
69 of 255
Remembering
+4 | -1
Liver stores
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because the liver is a storage site for fat-soluble vitamins, including Vitamin A, Vitamin D, and Vitamin E.
70
Hard
70 of 255
Understanding
+4 | -1
A child took sugarcane and sucked its juice. Regarding this, which of the following match is correct?
View answer and explanation
Correct option: D
Substrate of enzyme - Sucrose; Enzyme secretion - Invertase; Site of formed - Duodenum; Products - Glucose + Fructose
Option D (Substrate of enzyme - Sucrose; Enzyme secretion - Invertase; Site of formed - Duodenum; Products - Glucose + Fructose) is correct because sucrose is broken down by invertase in the duodenum into glucose and fructose.
71
Easy
71 of 255
Understanding
+4 | -1
Which of the following is not true
View answer and explanation
Correct option: B
Vitamins and minerals are required in large quantity
Option B (Vitamins and minerals are required in large quantity) is not true because vitamins and minerals are required in trace quantities, not large quantities.
72
Hard
72 of 255
Understanding
+4 | -1
Assertion: Brunner's glands found in jejunum secrete enzyme and mucus.
Reason: Mucus protect the jejunal wall from getting digested.
Reason: Mucus protect the jejunal wall from getting digested.
View answer and explanation
Correct option: C
Assertion is not correct but Reason is correct
Option C (Assertion is not correct but Reason is correct) is correct because Brunner's glands are found in the duodenum, not the jejunum, but mucus does protect the intestinal wall.
73
Medium
73 of 255
Understanding
+4 | -1
Which of the following is the correct chronological order for the enzyme activity of some enzymes taking part in protein digestion?
View answer and explanation
Correct option: A
Pepsin Trypsin Peptidase
Option A (Pepsin Trypsin Peptidase) is correct because pepsin initiates protein digestion in the stomach, followed by trypsin in the small intestine, and finally peptidases for breaking down smaller peptides.
74
Hard
74 of 255
Remembering
+4 | -1
The normal temperature of human body on the Kelvin scale is:
View answer and explanation
Correct option: D
310
The correct answer is D (310) because the normal human body temperature is 37°C, which is equivalent to 310 Kelvin (K = °C + 273).
75
Easy
75 of 255
Understanding
+4 | -1
By which process, glucose and amino acids are absorbed in the small intestine?
View answer and explanation
Correct option: A
Active transport
Option A is correct because glucose and amino acids are absorbed in the small intestine through active transport, requiring energy to move them against their concentration gradients.
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76
Medium
76 of 255
Remembering
+4 | -1
Fats are emulsified by the bile juice because it contains
View answer and explanation
Correct option: C
Bile salt
Option C (Bile salt) is correct because bile salts emulsify fats, breaking them into smaller droplets, which increases the surface area for lipase to act upon.
77
Easy
77 of 255
Remembering
+4 | -1
The juice containing sodium glycocholate is released under the influence of
View answer and explanation
Correct option: B
Cholecystokinin
Option B (Cholecystokinin) is correct because cholecystokinin stimulates the release of bile containing sodium glycocholate from the gallbladder.
78
Hard
78 of 255
Remembering
+4 | -1
Which of the following has minimum pH?
View answer and explanation
Correct option: C
Gastric juice
The correct answer is C (Gastric juice) because gastric juice, containing hydrochloric acid (HCl), has a pH of around 1.5 to 3.5, which is more acidic than bile, saliva, or pancreatic juice.
79
Hard
79 of 255
Remembering
+4 | -1
Identify the type of gastrointestinal hormone based on the functions given below
I. Stimulates the crypts of Lieberkuhn
II. Inhibits the secretion of glucagon by alpha cells
III. Stimulates Brunner’s glands to release mucus
Chooses the correct option accordingly
I. Stimulates the crypts of Lieberkuhn
II. Inhibits the secretion of glucagon by alpha cells
III. Stimulates Brunner’s glands to release mucus
Chooses the correct option accordingly
View answer and explanation
Correct option: D
I-Enterokinin
II-Somatostatin
III-Duocrinin
II-Somatostatin
III-Duocrinin
Option D (I-Enterokinin, II-Somatostatin, III-Duocrinin) is correct because Enterokinin stimulates the crypts of Lieberkuhn, Somatostatin inhibits glucagon secretion, and Duocrinin stimulates Brunner's glands.
80
Easy
80 of 255
Remembering
+4 | -1
Which of the following cells produce HCl?
View answer and explanation
Correct option: C
Oxyntic cells
Option C (Oxyntic cells) is correct because oxyntic cells (parietal cells) in the stomach secrete hydrochloric acid (HCl).
81
Easy
81 of 255
Remembering
+4 | -1
The opening of the common bile duct is guarded by sphincter?
View answer and explanation
Correct option: C
Oddi
Option C (Oddi) is correct because the sphincter of Oddi controls the flow of bile and pancreatic juice into the duodenum.
82
Easy
82 of 255
Remembering
+4 | -1
What name would you suggest for a thoroughly mixed food the with gastric juices by the churning movements of muscular stomach wall?
View answer and explanation
Correct option: B
Chyme
Option B (Chyme) is correct because chyme is the mixture of partially digested food and gastric juices in the stomach.
83
Medium
83 of 255
Understanding
+4 | -1
Read the following statements regarding the digestive system and select the correct statement
View answer and explanation
Correct option: A
Oesophagus passes through neck, thorax and diaphragm and open into stomach
Option A is correct because the esophagus indeed passes through the neck, thorax, and diaphragm before opening into the stomach.
84
Hard
84 of 255
Remembering
+4 | -1
Daily requirement of vitamin-A for adult women is
View answer and explanation
Correct option: B
700 micrograms
Option B (700 micrograms) is correct because the recommended daily allowance of Vitamin A for adult women is approximately 700 micrograms.
85
Easy
85 of 255
Remembering
+4 | -1
FAD is a coenzyme derived from
View answer and explanation
Correct option: A
Riboflavin
The correct answer is A (Riboflavin) because FAD (Flavin Adenine Dinucleotide) is a coenzyme derived from riboflavin (Vitamin B2).
86
Easy
86 of 255
Understanding
+4 | -1
The breakdown of biomolecules i.e. dipeptides like- lactose, maltose and sucrose etc. occur mainly in the
View answer and explanation
Correct option: C
Duodenum region of small intestine
Option C (Duodenum region of small intestine) is correct because the duodenum is the primary site for the breakdown of disaccharides like lactose, maltose, and sucrose by enzymes secreted by the intestinal cells.
87
Medium
87 of 255
Understanding
+4 | -1
The pH of the digestive juices varies in human intestine. What does it means?
View answer and explanation
Correct option: B
Medium is slightly basic
Option B (Medium is slightly basic) is correct because the pH in the human intestine is generally slightly alkaline to facilitate enzymatic activity.
88
Medium
88 of 255
Remembering
+4 | -1
Where the liver is located in human body?
View answer and explanation
Correct option: D
In abdominal cavity, just below the diaphragm
The correct answer is D (In abdominal cavity, just below the diaphragm) because the liver is located in the upper right quadrant of the abdominal cavity, directly beneath the diaphragm.
89
Easy
89 of 255
Understanding
+4 | -1
Facilated transport, facilitates the absorption of
View answer and explanation
Correct option: D
Both (a) and (b)
Option D is correct because facilitated transport assists in the absorption of both fructose and amino acids across the small intestine's cell membranes.
90
Medium
90 of 255
Understanding
+4 | -1
Which one of the following pairs of food components in humans reaches the stomach totally undigested?
View answer and explanation
Correct option: D
Fat and cellulose
Option D (Fat and cellulose) is correct because fat digestion starts in the small intestine, and humans lack the enzymes to digest cellulose.
Revision notes and key takeaways
Review DIGESTION AND ABSORPTION in your textbook or class notes, then use this set to check your understanding.
Showing 61-90 of 255 questions