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NEETBiology

Digestion and Absorption

10 NEET Biology previous year questions on Digestion and Absorption — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.

Q1 FREE PREVIEW
PYQ
Which of the following guards the opening of hepatopancreatic duct into the duodenum?
aIleocaecal valve
bPyloric sphincter
cSphincter of oddi
dSemilunar valve
✓ Correct answer: c) Sphincter of oddi
ExplanationThe Sphincter of Oddi guards the opening of the hepatopancreatic duct into the duodenum.It regulates the release of bile from the common bile duct and pancreatic juice from the pancreatic duct into the small intestine, preventing backflow of intestinal contents.Hence, the correct answer is option C.
Q2
PYQ

Succus entericus is referred to as:

[NEET 2021]

a

Pancreatic juice

b

Intestinal juice

c

Gastric juice

d

Chyme

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Q3
PYQ

The enzyme enterokinase helps in conversion of

[NEET 2020]

a

caseinogen into casein

b

pepsinogen into pepsin

c

protein into polypeptides

d

trypsinogen into trypsin

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Q4
PYQ

The proteolytic enzyme rennin is found in :

[Re-NEET 2020]

a

Pancreatic juice

b

Intestinal juice

c

Bile juice

d

Gastric juice

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Q5
PYQ

Once the undigested and unabsorbed substances enter the caecum, their backflow is prevented by -

[NEET 2023]

a

Ileo - caecal valve

b

Gastro - oesophageal sphincter

c

Pyloric sphincter

d

Sphincter of Oddi

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Q6
PYQ

Carrier ions like Na+ facilitate the absorption of substances like

a

amino acids and glucose

b

glucose and fatty acids

c

fatty acids and glycerol

d

fructose and some amino acids.

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Q7
PYQ

Fructose is absorbed into the blood through mucosa cells of intestine by the process called

a

active transport

b

facilitated transport

c

simple diffusion

d

co-transport mechanism.

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Q8
PYQ

Sphincter of oddi is present at:

[NEET 2021]

a

Ileo-caecal junction

b

Junction of hepato-pancreatic duct and duodenum

c

Gastro-oesophageal junction

d

Junction of jejunum and duodenum

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Q9
PYQ

Intrinsic factor that helps in the absorption of vitamin \(B_{12}\) is secreted by

[Re-NEET 2020]

a

Chief cells

b

Goblet cells

c

Hepatic Cells

d

Oxyntic cells

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Q10
PYQ

The proteolytic enzyme rennin is found in :

a

Pancreatic juice

b

Intestinal juice

c

Bile juice

d

Gastric juice

🔒
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