Once the undigested and unabsorbed substances enter the caecum, their backflow is prevented by-
1. Pyloric sphincter 2. Sphincter of Oddi
3. Ileo - caecal valve 4. Gastro-oesophageal sphincter
Subtopic:  Introduction to Digestive System | Movement of Food in Gut |  DIGESTION OF FOOD |
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Choose the incorrect enzymatic reaction: 
1. \( Maltose \stackrel{\text { Maltase }}{\longrightarrow} Glucose + Galactose \)
2. \( Sucrose \stackrel{\text { sucrease }}{\longrightarrow} Glucose + Fructose \)
3. \( Lactose \stackrel{\text { Lactase }}{\longrightarrow} Glucose + Galactose \)
4. \(Dipeptides \stackrel{\text { Dipeptidases }}{\longrightarrow}Amino ~acids\)
Subtopic:   DIGESTION OF FOOD |
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Succus entericus is referred to as:

1. Gastric juice

2. Chyme

3. Pancreatic juice

4. Intestinal juice

Subtopic:  Intestinal Secretions |  DIGESTION OF FOOD |
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The enzyme enterokinase helps in the conversion of 

1.  trypsinogen into trypsin

2.  caseinogen into casein

3.  pepsinogen into pepsin

4.  protein into polypeptides 

Subtopic:  Pancreatic Secretions |  DIGESTION OF FOOD |
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The proteolytic enzyme rennin is found in:

1. Intestinal juice

2. Bile juice

3. Gastric juice

4. Pancreatic juice

Subtopic:   DIGESTION OF FOOD |
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Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes:

1. Duodenal cells

2. Chief cells

3. Goblet cells

4. Oxyntic cells

Subtopic:  Intestinal Secretions |  DIGESTION OF FOOD |
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Match the items given in Column - I with those in Column - II and choose the correct option:

Column-I

Column-II
(a) Rennin (i) Vitamin B12
(b) Enterokinase (ii) Facilitated transport
(c) Oxyntic cells (iii) Milk proteins
(d) Fructose (iv) Trypsinogen

Options: (a) (b) (c) (d)
1. iii iv ii i
2. iv iii i ii
3. iv iii ii i
4. iii iv i ii

Subtopic:  Gastric Secretions | Intestinal Secretions |  DIGESTION OF FOOD |
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Which of the following options best represents the enzyme composition of pancreatic juice?

1. Amylase, pepsin, trypsinogen, maltase

2. Peptidase, amylase, pepsin, rennin

3. Lipase, amylase, trypsinogen, pro carboxypeptidase

4. Amylase, peptidase, trypsinogen, rennin

Subtopic:  Pancreatic Secretions |  DIGESTION OF FOOD |
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