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Function of HCl in stomach is to-

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Important Questions on Digestion and Absorption

EASY
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Which of the following is NOT an enzyme?
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Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Gastric juice of infants contains:
MEDIUM
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Enterohepatic circulation of bile salts refers to
a) Circulation of bile juice between gall bladder and the liver through the cystic duct.
b) Combining of bile acids with sodium to form bile salts.
c) Bile salts after emulsification are absorbed back into the blood and are used in the liver for bile juice.
d) Bile salts of chylomicrons are released into the blood and are carried to the liver where they are not used in the formation of bile juice.
EASY
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Identify the CORRECT match of the site of action on food substrate, enzyme acting on it and its end products in the following reactions.
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Biology>Human Physiology>Digestion and Absorption>Process of Digestion
An enzyme with optimal activity at pH 2.0 and 37°C is most likely to be:
EASY
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Which ONE of the following statements about rennin is CORRECT?
EASY
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
In the stomach, gastric acid is secreted by the
EASY
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Gross calorific value and physiological value of proteins are _______ and _______ kcal/g respectively.
HARD
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Explain the mechanism of digestion in stomach.
MEDIUM
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
A person had therapeutic surgery, which removed part of his stomach. Later, he started suffering from pernicious anemia. Biochemical tests showed that he had vitamin B12  deficiency. The most plausible cause for this deficiency is
MEDIUM
Biology>Human Physiology>Digestion and Absorption>Process of Digestion

Match List I with List II.

List I 

(Cells)

List II

(Secretion)
A. Peptic cells I. Mucus
B. Goblet cells II. Bile juice

C. Oxyntic cells

 III. Proenzyme pepsinogen
D. Hepatic cells  IV. HCL and intrinsic factor for absorption of vitamin B12 

Choose the correct answer from the options given below:

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Biology>Human Physiology>Digestion and Absorption>Process of Digestion
The initial step in the digestion of milk in human is carried out by?
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Biology>Human Physiology>Digestion and Absorption>Process of Digestion

Match the digestive glands given in Column - I with their respective enzymes given in Column — II and choose the correct combination from the given options,

  Column I   Column II
(1) Pancreas (p) Pepsin
(2) Gastric glands (q) Enterokinase
(3) Small intestine (r) Ptyalin
(4) Salivary glands (s) Trypsin

Choose the correct option:- 

EASY
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.
MEDIUM
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor ?
EASY
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
How does pepsinogen change into its active form?
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Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Which one of the following pairs of the kind of cells and their secretion is correctly matched?
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Biology>Human Physiology>Digestion and Absorption>Process of Digestion
Which one of the following pairs of food components in humans reaches the stomach totally undigested?
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Biology>Human Physiology>Digestion and Absorption>Process of Digestion
What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor ?
EASY
Biology>Human Physiology>Digestion and Absorption>Process of Digestion
The pathway with which Bile salts move-