Digestion and Absorption Multiple Choice Questions (MCQs) and Answers

(1) A large lymph vessel present in the villus of small intestine is called

[A] crypts

[B] lacteal

[C] Peyer’s patches

[D] valve of kerkring

Answer: lacteal

(2) Which of the following match is correct?

[A] Renin-Protein

[B] Trypsin-starch

[C] Invertase-Sucrase

[D] Amylase-Lactose

Answer: Invertase-Sucrase

(3) Match the following columns

Column -I	Column-II
a-Salivary amylase	1. Proteins
b -Bile salts	2. Milk protein
c-Renin	3. starch
d-Pepsin	4. Lipids
e-Steapsin	5. Emulsification of fats

[A] 5 4 1 2 3

[B] 3 5 2 1 4

[C] 2 3 5 4 1

[D] 2 3 4 5 1

Answer: 3 5 2 1 4

(4) Which one of the following sugar is most rapidly absorbed in the human gut.?

[A] Glucose

[B] Fructose

[C] Galactose

[D] Sucrose

Answer: Galactose

(5) Select the true statement regarding the digestion and absorption of food in humans.

[A] Oxyntic cell in human stomach secretes proenzymes,pepsinogen and trypsinogen

[B] Chylomicrons are small lipoprotein vesicles which are transported from the intestine into blood capillaries

[C] About 70% of the starch is hydrolysed by salivary amylase

[D] Fructose and aminoacids are absorbed through the intestinal mucosa with the help of carrier ions like Na+

Answer: Chylomicrons are small lipoprotein vesicles which are transported from the intestine into blood capillaries

(6) Absorption of fat occours through the process of

[A] active transport

[B] passive transport

[C] osmosis

[D] simple diffusion

Answer: simple diffusion

(7) What is common among amylase,renin and trypsin?

[A] all are produced in stomach

[B] all act at a pH lower than 7

[C] all are proteins

[D] all are proteolytic enzymes

Answer: all are proteins

(8) What name would you suggest for a thoroughly mixed food with gastric juices by the churning movements of muscular stomach wall?

[A] Bolus

[B] Chyme

[C] Either bolus or chime

[D] none of these

Answer: Chyme

(9) Which is the inactive form of enzyme,pepsin?

[A] Pepsinogen

[B] Protease

[C] Trypsin

[D] Peptones

Answer: Pepsinogen

(10) Pepsinogen is converted into active form of enzyme pepsin with the help of which of the following compound?

[A] Proenzyme

[B] Hydrochloric acid

[C] Electrolyte

[D] Bicarbonates

Answer: Hydrochloric acid

(11) Which enzyme is responsible for the digestion of milk in infants?

[A] Pepsin

[B] Trypsin

[C] Renin

[D] various proteolytic enzyme

Answer: Renin

(12) Maximum absorption of water occours in

[A] caecum

[B] colon

[C] small intestine

[D] large intestine

Answer: colon

(13) Succus entericus is secreted by

[A] Goblet cells

[B] Crypts of Lieberkuhn

[C] Islets of lengerhans

[D] Paneth cell

Answer: Crypts of Lieberkuhn

(14) What is the composition of bile?

[A] bile pigment and bile salts

[B] bile pigments and cholesterol

[C] cholesterol and phospholipids

[D] All the above

Answer: All the above

(15) Which of the following present in the filiform papillae of the tongue?

[A] chemoreceptors

[B] thermoreceptors

[C] tactile receptors

[D] taste buds

Answer: tactile receptors

(16) The gastric juice contain

[A] trypsin,renin,pepsin

[B] pepsin,trypsin,amylase

[C] pepsin ,renin, lipase

[D] trypsin,pepsin,lipase

Answer: pepsin ,renin, lipase

(17) Fill in the blanks with appropriate options to complete the given equation

[A] A-Lysozyme B-Polyglycerides

[B] A-Lysozyme B-Diglycerides

[C] A-Lipase B)Diglycerides

[D] A-Lipase B)Polyglycerides

Answer: A-Lipase B)Diglycerides

(18) Bile salt activates which enzyme?

[A] Lipase

[B] pancreatic amylase

[C] Pepsinogen

[D] Trypsinogen

Answer: pancreatic amylase

(19) Choose the incorrect statement regarding human digestive system with reference to a normal person.

[A] Human saliva is slightly acidic

[B] In human being, four pair of salivary gland secretes saliva

[C] The quantity of saliva in adult man may be 1 to 1.5L day

[D] Enzyme amylase present in saliva is responsible for the break down of starch into simpler sugar

Answer: In human being, four pair of salivary gland secretes saliva

(20) The given below diagram represents a duct system of pancreas,liver and gall bladder.Label the diagram from A to E.

[A] A-Gall bladder, B-common bile duct, C-Hepato pancreatic duct D-Pancreas E-Pancreatic duct

[B] A-Gall bladder, B- bile duct, C-Hepato pancreatic duct D-Pancreatic duct E-Pancreas

[C] A-Gall bladder, B- bile duct, E-Hepato pancreatic duct C-Pancreatic duct D-Pancreas

[D] A-Gall bladder, B-common bile duct, E-Hepato pancreatic duct D-Pancreatic duct C-Pancreas

Answer: A-Gall bladder, B-common bile duct, E-Hepato pancreatic duct D-Pancreatic duct C-Pancreas

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