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Digestion and Absorption

Multiple Choice Questions

21.

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system

Amphibia
Reptilia
Osteichthyes
Aves

22.

Identify the correct set, which shows the name of the enzyme from where it is secreted and the substrate upon which it acts.

Ptyalin – Intestine – Maltose
Ptyalin – Pancreas – Lipid
Pepsin – Stomach wall – Caesin
Chymotrypsin – Salivary gland – Lactose

23.

Oxyntic cells secrete

HCl
Trypsin
NaOH
Pepsinogen

24.

Vitamin-B₁₂ is absorbed primarily in the

Stomach
Duodenum
Jejunum
ileum

25.

The layer of cells that secrete enamel of the tooth is

Dentoblast
Ameloblast
Osteoblast
Odontoblast

26.

Kupffer cells are present in

liver
small intestine
pancreas
thyroid gland

27.

Secretion of pancreatic juice is stimulated by

gastrin
secretin
enterogasteron
enterokinase

28.
Digestion' word means

burning of food

oxidation of food

hydrolysis of food

oxidation of food

hydrolysis of food

Digestion is a process in which non-diffusible foods are converted into diffusible foods with the help of digestive enzymes. Digestion is mostly carried out by the process of hydrolysis using water molecules for the cleavage. The enzymes which bring about digestion are called hydrolases.