NCERT Digestion Absorption PDF,MCQs,model,mock Biology exam NEET

Digestion and Absorption Mock Exam-11

Question No:1

Assertion: The chemical process of digestion is initiated in the oral cavity.
Reason: Saliva contain hydrolytic enzyme salivary amylase.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:2

Assertion: Jaundice is yellowish discoloration of eye and skin.
Reason: It occurs due to deposition of bile pigments.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:3

Assertion: Faeces are retained with in rectum in costipation.
Reason: Bowel movement are regular in costipation.

[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason are false



Question No:4

If for some reason the parietal cells of the gut epithelium become partially non-functional, what is likely to happen?

[A] The pancreatic enzymes and specially the trypsin and lipase will not work efficiently
[B] The pH of stomach will fall abruptly
[C] Steapsin will be more effective
[D] Proteins will not adequately hydrolysed by pepsin into proteoses and peptones



Question No:5

Jaundice is a disorder of:

[A] Excretory system
[B] Skin and eyes
[C] Digestive system
[D] Circulatory system



Question No:6

Carrier ions like Na+ facilitate the absorption of substance like

[A] Amino acids and glucose
[B] Glucose and fatty acids
[C] Fatty acids and glycerol
[D] Fructose and some amino acids



Question No:7

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

[A] Rennin
[B] Lipase
[C] Trypsin
[D] Pepsin



Question No:8

One of the constituents of the pancreatic juice which is poured into the duodenum in humans is

[A] Trypsinogen
[B] Chymotrypsin
[C] Trypsin
[D] Enterokinase



Question No:9

Where do certain symbiotic microorganisms normally occur in human body?

[A] Oral lining and tongue surface
[B] Vermiform appendix and rectum
[C] Duodenum
[D] Caecum



Question No:10

Anxiety and eating spicy food together otherwise normal human, may lead to:

[A] Indigestion
[B] Jaundice
[C] Diarrhoea
[D] Vomiting



Question No:11

Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column II.
Column-I—Column-II

[A] Glycine, glucose —-Small intestine and active absorption
[B] Fructose. Na+—- Small intestine and passive absorption
[C] Glycerol and fatty acids—- Duodenum, move as chilomicrons
[D] Cholesterol and maltose—- Large intestine and active absorption



Question No:12

The initial step in the digestion of milk in humans is carried out by

[A] Lipase
[B] Trypsin
[C] Rennin
[D] Pepsin



Question No:13

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



Question No:14

The primary dentition in human differs from permanent dentition in not having one of the following type of teeth

[A] Premolars
[B] Molars
[C] Incisors
[D] Canine



Question No:15

The enzyme that is not present in succus entericus is:

[A] Nucleases
[B] Nucleosidase
[C] Lipase
[D] Maltase



Question No:16

Which of the following statement is not incorrect?

[A] Brunner’s glands are present in the submucosa of stomach and secrete pepsinogen
[B] Goblet cells are present in the mucosa of intestine and secrete mucus
[C] Oxyntic cells are present in the mucosa if stomach and secrete HCI
[D] Acini are present in the pancreas and secrete Carboxypeptidase.



Question No:17

Gastric juice of infants contains:

[A] maltase, pepsinogen, rennin
[B] nuclease, pepsinogen, lipase
[C] pepsinogen, lipase, rennin
[D] amylase, rennin, pepsinogen



Question No:18

The primary dentition in human differs from permanent dentition in not having one of the following type of teeth

[A] Premolars
[B] Molars
[C] Incisors
[D] Canine



Question No:19

The enzyme that is not present in succus entericus is:

[A] Nucleases
[B] Nucleosidase
[C] Lipase
[D] Maltose