Which of the following enzymes carries out the initial step in the digestion of milk in humans?

1. Rennin

2. Lipase

3. Trypsin

4. Pepsin

Subtopic:  Gastric Secretions |
NEET - 2011
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Which one of the following statement is false regarding digestion and absorption of food in humans?

1. Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

2. Glucose and amino acids are absorbed with the help of carrier ions like Na+.

3. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.

4. About 30% of starch is hydrolysed by salivary amylase in our mouth.

Subtopic:  Absorption: Part 1 | Absorption |
 72%
From NCERT
NEET - 2009
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What will happen if the secretion of parietal cells of gastric glands is blocked with an

inhibitor?

1. Gastric juice will be deficient in chymosin

2. Gastric juice will be deficient in pepsinogen

3. In the absence of HCl secretion, inactive pepsinogen is not converted into the active

enzyme pepsin

4. Enterokinase will not be released from the duodenal mucosa and so trypsinogcn is not

converted to trypsin

Subtopic:  Gastric Secretions |
 84%
From NCERT
NEET - 2008
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Which one of the following is the correct matching of the site of action on the given

substrate, the enzyme acting upon it and the end product?
1. Duodenum :TriglyceridesTrypsinMonoglycerides
2. Small intestine :Starchα-amylaseDisaccharide (maltose)
3. Small intestine :ProteinsPepsinAmino Acids
4. Stomach :Fats LipaseMicelles

Subtopic:  Pancreatic Secretions | Intestinal Secretions | Absorption: Part 1 | Absorption: Part 2 | Absorption |
 51%
NEET - 2008
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The following is a scheme showing the fate of carbohydrates during digestion in the

human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C

and D. Choose the correct option from those given.


1. A = Amylase, B = Maltase, C = Lactase,D = Invertase

2. A = Amylase, B = Maltase, C = Invertase,D = Lactase

3. A = Amylase, B = Invertase, C = Maltase, D = Lactase

4. A = Amylase, B = Lactase, C = Maltase, D = Invertase

Subtopic:  Movement of Food in Gut |
 86%
From NCERT
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Cobalt is present in the molecule of

1. vitamin B6

2. vitamin B12

3. vitamin B2

4. vitamin B1

 77%
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During digestion, before the action of lipase, fat is emulsified by:-

1. ergosterols

2. phospholipids

3. lipoproteins

4. digitonin

Subtopic:  Pancreatic Secretions |
 54%
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Sea fish are good source of

1. iron

2. iodine

3. potassium

4. all the above

Subtopic:  Thyroid Gland Part I | Thyroid Gland Part II |
 52%
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Which of the folowing teeth are lophodont ?

1. Incisor and canine

2. Canine and premolar

3. Premolar and molar

4. Premolar and incisor

Subtopic:  Alimentary Canal: Oral Cavity & Teeth |
 56%
AIIMS - 2002
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Which of the following digestive juices has the minimum pH value ?

1. Bile

2. Gastric juice

3. Saliva

4. Pancreatic juice

Subtopic:   DIGESTION OF FOOD |
 72%
From NCERT
AIIMS - 2002
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