Your cart is empty.
Practice each question, then open the answer or worked solution.
The food mixes thoroughly with the acidic gastric juice of the stomach by the churning movements of its muscular wall. What do we call the food then?
Ans: The food churned with gastric juice is known as Chyme.
Trypsinogen is an inactive enzyme of pancreatic juice. An enzyme, enterokinase, activates it. Which tissue/ cells secrete this enzyme? How is it activated?
Ans: The intestinal wall secretes trypsinogen. It is activated into trypsin by enterokinase.
In which part of the alimentary canal does absorption of water, simple sugars and alcohol take place?
Ans: The stomach absorbs water, sugar and alcohol.
Name the enzymes involved in the breakdown of nucleotides into sugars and bases?
Ans: Nucleotides are converted into sugars and base by Nucleases.
Define digestion in one sentence.
Ans: Digestion is the process by which complex food materials are converted into simple, digestible forms.
What do we call the type of teeth attached to jawbones in which each tooth is embedded in a socket of jaw bones?
Ans: The tooth attachment is Thecodont.
Stomach is located in the upper-left portion of the abdominal cavity and has three major parts. Name these three parts.
Ans: The stomach is divided into three major parts: (a) Cardiac (b) Fundus (c) Pylorus
Does the gallbladder make bile?
Ans: No, bile is stored in the gallbladder.
Correct the following statements by deleting one of the entries (given in bold).
(a) Goblet cells are located in the intestinal mucosal epithelium and secrete chymotrypsin/mucus.
(b) Fats are broken down into di- and monoglycerides with the help of amylase/lipases.
(c) Gastric glands of stomach mucosa have oxyntic cell/ chief cells, which secrete HCI.
(d) Saliva contains enzymes that digest starch/protein.
Ans: (a) Goblet cells are situated in the intestinal mucosal epithelium that helps in the secretion of mucus.
(b) Fats are broken down into diglycerides and monoglycerides in the intestine with the help of lipases.
(c) Oxyntic cells in the gastric glands of stomach mucosa secrete HCI.
(d) Saliva contains enzymes that help in the digestion of starch.