A. Multiple Choice Questions 1. This is a digestive gland (a) Tongue (b) Tooth (c) Stomach (d) Liver 2. Breakdown of complex insoluble organic compounds into simple soluble molecules is (a) Digestion (b) Absorption (c) Assimilation (d) Egestion 3. This organ begins with mouth and ends at anus (a) Stomach (b) Alimentary canal (c) Foodpipe (d) Oesophagus 4. Hydrochloric acid in stomach (a) Helps in the digestion of fats (b) Kills bacteria ingested along with food (c) Converts starch into sugars (d) Helps in the digestion of protein 5. Gastric glands are found in (a) Stomach (b) Buccal cavity (c) Liver (d) Large intestine 6. The leaf-like pink gland in human body is (a) Liver (b) Villi (c) Lacteal (d) Pancreas 7. Fat is broken down to fatty acids and glycerol by (a) Lipase (b) Amylase (c) Trypsin (d) Bile salts 8. In man, digestion of starch starts in (a) Buccal cavity (b) Stomach (c) Oesophagus (d) Duodenum
Answer (1)
Here are the answers to the multiple-choice questions related to digestion:
This is a digestive gland:
(d) Liver
The liver is considered a digestive gland because it produces bile, which is essential for the digestion and absorption of fats.
Breakdown of complex insoluble organic compounds into simple soluble molecules is:
(a) Digestion
Digestion is the process where complex molecules like proteins, carbohydrates, and fats are broken down into simpler forms such as amino acids, sugars, and fatty acids, so they can be absorbed by the body.
This organ begins with mouth and ends at anus:
(b) Alimentary canal
The alimentary canal, also known as the digestive tract, is a continuous, hollow muscular tube that starts at the mouth and ends at the anus. It includes the mouth, esophagus, stomach, intestines, and anus.
Hydrochloric acid in the stomach:
(b) Kills bacteria ingested along with food
Hydrochloric acid creates an acidic environment that helps kill bacteria and provides the optimal pH for the activation and function of the pepsin enzyme for protein digestion.
Gastric glands are found in:
(a) Stomach
Gastric glands, located in the lining of the stomach, secrete gastric juices, including hydrochloric acid and digestive enzymes such as pepsin.
The leaf-like pink gland in human body is:
(d) Pancreas
The pancreas is a leaf-like gland that secretes digestive enzymes and hormones such as insulin.
Fat is broken down to fatty acids and glycerol by:
(a) Lipase
Lipase is an enzyme that catalyzes the hydrolysis of fats into fatty acids and glycerol, facilitating fat digestion.
In man, digestion of starch starts in:
(a) Buccal cavity
The digestion of starch begins in the buccal cavity or mouth where the enzyme amylase, present in saliva, starts breaking down starch into simpler sugars.
