Digestion and Absorption

In the alimentary canal, most water is absorbed in the

• oesophagus

• stomach

• small intestine

• colon

Peristalsis occurs in

• 1, 2 and 3 only

• 1, 2 and 4 only

• 1, 3 and 4 only

• 2, 3 and 4 only

Tags

NGSS.MS-LS1-3

Waves of contractions that move food one way through the digestive system are called

• Impulse

• Peristalsis

• Action Potential

• Metabolism

Bile juice helps in the digestion of fat because it contains

• enzymes

• vitamins

• bile salts

• bile pigments

The stomach wall produces mucus to cover its surface. Which of the following statements correctly describe(s) the function of the mucus?

• only

• only

• and only

• and only

Tags

NGSS.MS-LS1-3

In the alimentary canal, bacteria in food are mainly killed by

• saliva

• mucus

• gastric juice

• pancreatic juice

The liver is said to be a digestive gland because it

• converts stored glycogen into glucose

• breaks down excess amino acids

• produces bile

• stores iron

Tags

NGSS.HS-LS1-6

Protein digestion occurs mainly in

• 1 and 3

• 2 and 3

• 2 and 5

• 3 and 5

Bile is a digestive juice in our body. Which of the following statements about bile is correct?

• It is produced by the gall bladder.

• It contains an enzyme that digests fat.

• It helps break down fat into droplets.

• It stimulates peristaltic movement of the small intestine.

Chemical digestion of carbohydrate occurs in

• 1 and 2 only

• 1 and 4 only

• 2 and 3 only

• 3 and 4 only

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2