Question 1: Palette 1/70

NEET 2023 MCQ

Diacetyl morphine is also called as :

A

Amphetamine

B

Barbiturate

C

Crack

D

Smack

Question 2: Palette 2/70

NEET 2023 MCQ

Select the correct sequential steps regarding absorption of fatty acids and glycerol, in intestine.

(A) Micelles are reformed into small protein coated fat globules called chylomicrons.

(B) Micelles move into intestinal mucosa.

(C) Fatty acids and glycerol are incorporated into small droplets called micelles.

(D) Lacteals release the absorbed substances into blood stream.

(E) Chylomicrons are transported into lacteals.

Choose the correct answer from the options given below :

A

(A), (E), (B), (D), (C)

B

(D), (E), (B), (C), (A)

C

(C), (B), (A), (E), (D)

D

(B), (C), (E), (A), (D)

Question 3: Palette 3/70

NEET 2023 MCQ

Match List I with List II

	List I (Cells)		List II (Secretion)
(A)	Peptic cells	(I)	Mucus
(B)	Goblet cells	(II)	Bile juice
(C)	Oxyntic cells	(III)	Proenzyme pepsinogen
(D)	Hepatic cells	(IV)	HCl and intrinsic factor for absorption of vitamin B$_{12}$

Choose the correct answer from the options given below:

A

A-II, B-I, C-III, D-IV

B

A-III, B-I, C-IV, D-II

C

A-II, B-IV, C-I, D-III

D

A-IV, B-III, C-II, D-I

Question 4: Palette 4/70

NEET 2023 MCQ

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

A

Ileo-caecal valve

B

Gastro-oesophageal sphincter

C

Pyloric sphincter

D

Sphincter of Oddi

Question 5: Palette 5/70

NEET 2023 MCQ

Match List I with List II.

	List I		List II
(A)	CCK	(I)	Kidney
(B)	GIP	(II)	Heart
(C)	ANF	(III)	Gastric gland
(D)	ADH	(IV)	Pancreas

Choose the correct answer from the options given below :

A

A-III, B-II, C-IV, D-I

B

A-II, B-IV, C-I, D-III

C

A-IV, B-II, C-III, D-I

D

A-IV, B-III, C-II, D-I

Question 6: Palette 6/70

NEET 2022 MCQ

Role of enamel is to

A

Give basic shape to the teeth

B

Connect crown of tooth with its root

C

Masticate the food

D

Form bolus

Question 7: Palette 7/70

NEET 2022 MCQ

Given below are two statements:

Statement I : Fatty acids and glycerols cannot be absorbed into the blood.

Statement II : Specialized lymphatic capillaries called lacteals carry chylomicrons into lymphatic vessels and ultimately into the blood.

In the light of the above statements, choose the most appropriate answer from the options given below:

A

Both Statement I and Statement II are correct

B

Both Statement I and Statement II are incorrect

C

Statement I is correct but Statement II is incorrect

D

Statement I is incorrect but Statement II is correct

Question 8: Palette 8/70

NEET 2022 MCQ

Which of the following functions is not performed by secretions from salivary glands?

A

Control bacterial population in mouth

B

Digestion of complex carbohydrates

C

Lubrication of oral cavity

D

Digestion of disaccharides

Question 9: Palette 9/70

NEET 2022 MCQ

Which of the following is present between the adjacent bones of the vertebral column?

A

Intercalated discs

B

Cartilage

C

Areolar tissue

D

Smooth muscle

Question 10: Palette 10/70

NEET 2021 MCQ

Succus entericus is referred to as :

A

Chyme

B

Pancreatic juice

C

Intestinal juice

D

Gastric juice

Question 11: Palette 11/70

NEET 2021 MCQ

Sphincter of oddi is present at :

A

Junction of jejunum and duodenum

B

Ileo-caecal junction

C

Junction of hepato-pancreatic duct and duodenum

D

Gastro-oesophageal junction

Question 12: Palette 12/70

NEET 2020 MCQ

Identify the correct statement with reference to human digestive system.

A

Ileum opens into small intestine

B

Vermiform appendix arises from duodenum

C

Serosa is the innermost layer of the alimentary canal

D

Ileum is a highly coiled part

Question 13: Palette 13/70

NEET 2020 MCQ

The enzyme enterokinase helps in conversion of

A

pepsinogen into pepsin

B

protein into polypeptides

C

trypsinogen into trypsin

D

caseinogen into casein

Question 14: Palette 14/70

NEET 2020 MCQ

Goblet cells of alimentary canal are modified from

A

Columnar epithelial cells

B

Compound epithelial cells

C

Squamous epithelial cells

D

Chondrocytes

Question 15: Palette 15/70

NEET 2019 MCQ

It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

A

Gibberellin and Abscicic acid

B

Cytokinin and Abscisic acid

C

Auxin and Ethylene

D

Gibberellin and Cytokinin

Question 16: Palette 16/70

NEET 2019 MCQ

Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.

A

Oxyntic Cells

B

Duodenal Cells

C

Chief Cells

D

Goblet Cells

Question 17: Palette 17/70

NEET 2019 MCQ

Match the following structures with their respective location in organs :

(a) Crypts of Lieberkuhn	(i) Pancreas
(b) Glisson’s capsule	(ii) Duodenum
(c) Islets of Langerhans	(iii) Small intestine
(d) Brunner’s Glands	(iv) Liver

Select the correct option

A

(a)	(b)	(c)	(d)
(iii)	(iv)	(i)	(ii)

B

(a)	(b)	(c)	(d)
(iii)	(ii)	(i)	(iv)

C

(a)	(b)	(c)	(d)
(iii)	(i)	(ii)	(iv)

D

(a)	(b)	(c)	(d)
(ii)	(iv)	(i)	(iii)

Question 18: Palette 18/70

NEET 2018 MCQ

Which of the following terms describe human dentition?

A

Pleurodont, Monophyodont, Homodont

B

Thecodont, Diphyodont, Homodont

C

Pleurodont, Diphyodont, Heterodont

D

Thecodont, Diphyodont, Heterodont

Question 19: Palette 19/70

NEET 2018 MCQ

Which of the following gastric cells indirectly help in erythropoiesis?

A

Mucous cells

B

Parietal cells

C

Chief cells

D

Goblet cells

Question 20: Palette 20/70

NEET 2017 MCQ

Which of the following options best represents the enzyme composition of pancreatic juice?

A

Amylase, Pepsin, Trypsinogen, Maltase

B

Peptidase, Amylase, Pepsin, Rennin

C

Lipase, Amylase, Trypsinogen, Procarbo-xypeptidase

D

Amylase, Peptidase, Trypsinogen, Rennin

Question 21: Palette 21/70

NEET 2017 MCQ

A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent?

A

Canines

B

Pre-molars

C

Molars

D

Incisors

Question 22: Palette 22/70

NEET 2017 MCQ

Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?

A

Paneth cells

B

Zymogen cells

C

Kupffer cells

D

Argentaffin cells

Question 23: Palette 23/70

NEET 2016 MCQ

Which hormones do stimulate the production of pancreatic juice and bicarbonate?

A

Angiotensin and epinephrine

B

Gastrin and insulin

C

Cholecystokinin and secretin

D

Insulin and glucagon

Question 24: Palette 24/70

NEET 2016 MCQ

In the stomach, gastric acid is secreted by the

A

peptic cells

B

acidic cells

C

gastrin secreting cells

D

parietal cells.

Question 25: Palette 25/70

NEET 2016 MCQ

Which of the following guards the opening of hepatopanjcreatic duct into the duodenum?

A

Pyloric sphincter

B

Sphincter of Oddi

C

Semilunar valve

D

Ileocaecal valve

Question 26: Palette 26/70

NEET 2015 MCQ

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

A

Molars

B

Incisors

C

Canines

D

Premolars

Question 27: Palette 27/70

NEET 2015 MCQ

The enzyme that is not present in succus entericus is

A

nucleosidase

B

lipase

C

maltase

D

nuclease.

Question 28: Palette 28/70

NEET 2015 MCQ

Gastric juice of infants contains

A

pepsinogen, lipase, rennin

B

amylase, remain, pepsinogen

C

maltase, pepsinogen, rennin

D

nuclease, pepsinogen

Question 29: Palette 29/70

NEET 2015 MCQ

Which of the following statements is not correct?

A

Oxyntic cells are present in the mucosa of stomach and secrete HCl.

B

Acini are present in the pancreas and secrete carboxypeptidase.

C

Brunner's glands are present in the submucosa of stomach and secrete pepsinogen.

D

Goblet cells are present in the mucosa of intestine and secrete mucus.

Question 30: Palette 30/70

NEET 2014 MCQ

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

A

active transport

B

facilitated transport

C

simple diffusion

D

co-transport mechanism.

Question 31: Palette 31/70

NEET 2014 MCQ

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

A

lipase

B

trypsin

C

rennin

D

pepsin.

Question 32: Palette 32/70

NEET 2013 MCQ

A healthy person eats the following diet-5 gm raw sugar, 4 gm albumin, 10 gm pure buffalo ghee adultrated with 2 gm vegetable ghee (hydrogenated vegetable oil) and 5 gm lignin. How many calories he is likely to get?

A

126

B

164

C

112

D

144

Question 33: Palette 33/70

NEET 2013 MCQ

Which enzymes are likely to act on the backed potatoes eaten by a man, starting from the mouth and as it moves down the alimentary canal?

A

Pancreatic amylase $ \to $ Salivary amylase $ \to $ Lipases

B

Disaccharidase like maltase $ \to $ Lipases $ \to $ Nucleases

C

Salivary amylase $ \to $ Pancreatic amylase $ \to $ Disaccharidases

D

Salivary maltase $ \to $ Carboxy peptidase $ \to $ Trypsinogen

Question 34: Palette 34/70

NEET 2013 MCQ

Select the correct match of the digested products in humans given in column ${\rm I}$ with their absorption site and mechanism in column ${\rm I}$${\rm I}$.

A

Column ${\rm I}$		Column ${\rm I}$${\rm I}$
Glycerol, fatty acids		Duodenum, move as chylomicrons

B

Column ${\rm I}$		Column ${\rm I}$${\rm I}$
Cholesterol, maltose		Large intestine, active absorption

C

Column ${\rm I}$		Column ${\rm I}$${\rm I}$
Glycine, glucose		Small intestine, active absorption

D

Column ${\rm I}$		Column ${\rm I}$${\rm I}$
Fructose, Na+		Small intestine, passive absorption

Question 35: Palette 35/70

NEET 2012 MCQ

Where do certain symbiotic microorganisms normally occur in human body?

A

Caecum

B

Oral lining and tongue surface

C

Vermiform appendix and rectum

D

Duodenum

Question 36: Palette 36/70

NEET 2012 MCQ

For its activity, carboxypeptidase requires

A

Zinc

B

iron

C

niacin

D

copper.

Question 37: Palette 37/70

NEET 2012 MCQ

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

A

indigestion

B

jaundicce

C

diarrhoea

D

vomiting.

Question 38: Palette 38/70

NEET 2011 MCQ

Which one of the following correctly represents the normal adult human dental formula?

A

${3 \over 3},{1 \over 1},{3 \over 2},{1 \over 1}$

B

${2 \over 2},{1 \over 1},{3 \over 2},{3 \over 3}$

C

${2 \over 2},{1 \over 1},{2 \over 2},{3 \over 3}$

D

${3 \over 3},{1 \over 1},{3 \over 3},{3 \over 3}$

Question 39: Palette 39/70

NEET 2011 MCQ

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 40: Palette 40/70

NEET 2011 MCQ

Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of

A

epiglottis

B

diaphragm

C

neck

D

tounge.

Question 41: Palette 41/70

NEET 2011 MCQ

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

A

Trypsin

B

Pepsin

C

Rennin

D

Lipase

Question 42: Palette 42/70

NEET 2010 MCQ

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 be adequately hydrolysed by pepsin into proteoses and peptones.

Question 43: Palette 43/70

NEET 2010 MCQ

Jaundice is a disorder of

A

excretory system

B

skin and eyes

C

digestive system

D

circulatoy system.

Question 44: Palette 44/70

NEET 2010 MCQ

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.

Question 45: Palette 45/70

NEET 2010 MCQ

If for some reason our goblet cells are nonfunctional, this will adversely affect.

A

production of somatostain

B

secretion of sebum from the sebaceous glands

C

maturation of sperms

D

smooth movement of food down the intestine.

Question 46: Palette 46/70

NEET 2009 MCQ

Which one of the following pairs of food components in humans reaches the stomach totally undigested?

A

Starch and fat

B

Fat and cellulose

C

Starch and cellulose

D

Protein and starch.

Question 47: Palette 47/70

NEET 2009 MCQ

When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from

A

rickets

B

kwashiorkor

C

pellagra

D

marasmus.

Question 48: Palette 48/70

NEET 2009 MCQ

A young infant may be feeding entirely on mother's milk which is white in colour but the stools which the infant passes out is quite yellowish. what is this yellow colour due to?

A

Bile pigments passed through bile juice

B

Undigested milk protein casein

C

Pancreatic juice poured into duodenum

D

Intestimal juice

Question 49: Palette 49/70

NEET 2009 MCQ

Which one of the following statements is true regarding digestion and absorption of food in humans?

A

Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na⁺.

B

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

C

About 60% of starch is hydrolysed by salivary amylase in our mouth.

D

Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

Question 50: Palette 50/70

NEET 2008 MCQ

What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?

A

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

B

Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin.

C

Gastric juice will be deficient in chymosin.

D

Gastric juice will be deficient in pepsinogen.

Question 51: Palette 51/70

NEET 2008 MCQ

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?

A

Small intestine : Proteins $\buildrel {Pep\sin } \over \longrightarrow $ amino acids

B

Stomach : Fats $\buildrel {Lipase} \over \longrightarrow $ micelles

C

Duodenum : Triglycerides $\buildrel {Tryp\sin } \over \longrightarrow $ monoglycerides

D

Small intestine : Starch $\buildrel {\alpha - Amylase} \over \longrightarrow $ disaccharide (maltose)

Question 52: Palette 52/70

NEET 2007 MCQ

Which one of the following is a fat-soluble vitamin and its related deficiency diseade?

A

Retinol     -     Xerophthalmia

B

Cobalamine     -     Beri-beri

C

Calciferol     -     Pellagra

D

Ascorbic acid     -     Scurvy

Question 53: Palette 53/70

NEET 2006 MCQ

Examination of blood of a person suspected of having anaemia shows large, immature, nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the following is likely to alleviate his symptoms?

A

Iron compounds

B

Thiamine

C

Folic acid and cobalamine

D

Riboflavin

Question 54: Palette 54/70

NEET 2005 MCQ

Which group of three of the following five statements (1 - 5) contain all three correct statements regarding beri-beri?
1.  A crippling disease prevalent among the native population of sub-Saharan Africa
2.  A deficiency disease caused by lack of thiamine (vitamin B₁)
3.  A nutritional disorder in infants and young children when the diet is persistently deficient in essential protein
4.  Occurs in those countries where the staple diet is polished rice
5.  The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.

A

2, 4 and 5

B

1, 2 and 4

C

1, 3 and 5

D

2, 3 and 5

Question 55: Palette 55/70

NEET 2005 MCQ

A patient is generally advised to specially consume more meat, lentils, milk and eggs in diet only when he suffers from

A

scurvy

B

kwashiorkar

C

rickets

D

anaemia.

Question 56: Palette 56/70

NEET 2005 MCQ

Epithelial cells of the intestine involved in food absorption have on their surface

A

pinocytic vesicles

B

microvilli

C

zymogen granules

D

phagocytic vesicles.

Question 57: Palette 57/70

NEET 2005 MCQ

Secretin and cholecystokinin are digestive hormones. They are secreted in

A

pyloric stomach

B

duodenum

C

ileum

D

oesophagus.

Question 58: Palette 58/70

NEET 2004 MCQ

Which one of the following pairs is not correctly matched?

A

Vitamin B₁₂   -   Pernicious anaemia

B

Vitamin B₆   -   Convulsions

C

Vitamin B₁   -   Beri-beri

D

Vitamin B₂   -   Pellagra

Question 59: Palette 59/70

NEET 2004 MCQ

The richest sources of vitamin B₁₂ are

A

goat's liver and Spirulina

B

chocolate and green gram

C

rice and hen's egg

D

carrot and chicken's breast.

Question 60: Palette 60/70

NEET 2004 MCQ

Duodenum has characteristics Brunner's gland which secrete two hormones called

A

kinase, estrogen

B

secretin, cholecystokinin

C

prolactin, parathormone

D

estradiol, progesterone.

Question 61: Palette 61/70

NEET 2003 MCQ

During prolonged fastings, in what sequence are the following organic compounds used up by the body?

A

First carbohydrates, next fats and lastly proteins

B

First fats, next carbohydrates and lastly proteins

C

First carbohydrates, next proteins and lastly lipids

D

First proteins, next lipids and lastly carbohydrates.

Question 62: Palette 62/70

NEET 2003 MSQ

Which one of the following pairs is not correctly matched?

A

Vitamin C   -   Scurvy

B

Vitamin B₂   -   Pellagra

C

Vitamin B₁₂   -   Pernicious anaemia

D

Vitamin B₆   -   Beri-beri

Question 63: Palette 63/70

NEET 2002 MCQ

Continuous bleeding from an injured part of body is due to deficiency of

A

vitamin A

B

vitamin B

C

vitamin K

D

vitamin E.

Question 64: Palette 64/70

NEET 2002 MCQ

Stool of a person is which grey coloured due to malfunction of which of the following organ?

A

Pancreas

B

Spleen

C

Kidney

D

Liver

Question 65: Palette 65/70

NEET 2002 MCQ

Hydrolytic enzymes which act on low pH called as

A

proteases

B

$\alpha $-amylases

C

hydrolases

D

peroxidases.

Question 66: Palette 66/70

NEET 2001 MCQ

Which one of the followinf is correctly matched?

A

Vitamin E   -   Tocopherol

B

Vitamin D   -    Riboflavin

C

Vitamin B   -   Calciferol

D

Vitamin A   -   Thiamine

Question 67: Palette 67/70

NEET 2000 MCQ

Essential amino acid is

A

phenylalanine

B

glycine

C

aspartic acid

D

serine.

Question 68: Palette 68/70

NEET 2000 MCQ

A person who is eating boiled potato, his food contains the component

A

cellulose which is digested by cellulase

B

starch which is not digested

C

lactose which is not digested

D

DNA which can be digested by pancreatic DNase.

Question 69: Palette 69/70

NEET 2000 MCQ

Which food should be eaten during deficiency of rhodopsin in eyes?

A

Carrot and ripe papayas

B

Guava, banana

C

Mango and potato

D

None of the above

Question 70: Palette 70/70

NEET 2000 MCQ

In mammals milk is digested by the action of

A

rennin

B

amylase

C

intestinal bacteria

D

invertase.