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Inactive pepsinogen is converted into active pepsin by

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Important Questions on Digestion and Absorption

MEDIUM
Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Which of the following statements is not correct?
MEDIUM
Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
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.
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Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Which hormones do stimulate the production of pancreatic juice and bicarbonate?
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Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Removal of the pancreas impairs the breakdown of
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Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
In the stomach, gastric acid is secreted by the
MEDIUM
Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans

Match the following 

   List - I     List - II
(a) Villikinin (i) Stimulates the secretion of HCl and pepsinogen
(b) Secretin (ii) Stimulates the secretions of H2O and HCO3-
(c) Gastrin (iii) Stimulates intestinal epithelial movement to increase nutrient absorption
(d) Cholecystokinin (iv) Stimulates the secretion of pancreatic enzymes and bile juice

The correct answer is

EASY
Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Gastric juice of infants contains:
EASY
Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Gross calorific value and physiological value of proteins are _______ and _______ kcal/g respectively.
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Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Which one of the following statements is true about trypsinogen?
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Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Which ONE of the following statements about rennin is CORRECT?
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Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
An enzyme with optimal activity at pH 2.0 and 37°C is most likely to be:
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Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.
EASY
Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans

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>Digestion of Food in Humans
Which of the following options best represents the enzyme composition of pancreatic juice?
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Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Digestion of both starch and proteins is carried out by enzymes of
MEDIUM
Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Which chemical flowing through the blood initiates the digestion of protein in humans?
HARD
Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
Give the name of the enzyme secreted by the alimentary canal, one of the product of which is pentose sugar.
EASY
Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
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>Digestion of Food in Humans
The initial step in the digestion of milk in human is carried out by?
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Biology>Human Physiology>Digestion and Absorption>Digestion of Food in Humans
The enzyme that is not present in succus entericus is: