Absorption, Assimilation and Egestion

Which of the following is/are involved in absorption?

• diffusion

• filtration

• hydrolysis

• active transport

Which of the following are the structural adaptations of villi for absorption?

• The small intestine is very long that more time is provided for absorption of digested food.

• Microvilli are present on cell surfaces of epithelial cells to further increase surface area for absorption of digested food.

• The epithelial cell is one cell thick to shorten the diffusion distance of digested food.

• The epithelium is one cell thick to shorten the diffusion distance of digested food.

The main site of absorption of water is

• stomach

• duodenum

• ileum

• colon

Which of the following is/are absorbed into the network of blood capillaries of villi?

• Glycerol

• Glucose

• Glycogen

• Sucrose

Which of the following is/are absorbed into the lacteals of villi?

• Glycerol

• Fat

• Fatty acids

• Vitamin A

Which of the following is/are the function of colon?

• Digest food materials

• Absorb digested food

• Absorb water from indigestible materials

• Stores indigestible materials

Excess glucose absorbed will be converted into

• glycogen which is stored in the liver and skeletal muscles.

• fat which is stored in adipose tissues under the skin.

• fat which is stored in adipose tissues around internal organs.

• protein which builds up the skeletal muscles.

Recombination of fatty acids and glycerol occurs in

• villus

• lacteal

• blood capillary network

• epithelial cells

Which of the following is/are the function(s) of liver?

• Break down excess fatty acids

• Break down excess amino acids

• Storage of bile

• Storage of glycogen

Egestion/defaecation refers to the removal of

• undigested food.

• indigested food.

• undigestible food.

• indigestible food.