Question

By which of the following mechanisms do the water molecules most likely move into the large intestine?

Answer 1

The complete question is :

A magnesium sulfate solution taken orally can cause a net movement of water into the large intestine, which results from water molecules diffusing through aquaporins embedded in the cells of the intestinal lining.

By which of the following mechanisms do the water molecules most likely move into the large intestine?

А

.By passive transport from an area of low osmolarity to an area of high osmolarity

B

.By passive transport from an area of high osmolarity to an area of low osmolarity

C

.By active transport from an area of low osmolarity to an area of high osmolarity

D

.By active transport from an area of high osmolarity to an area of low osmolarity

Answer: Option B

Explanation:

There are different methods by which the movement of water takes place inside the body from one organs to another organ.The water from the small intestine moves into the large intestine.

By the means of passive transport the water moves from an area having lower osmolarity to an area having lower osmolarity.

The water molecules moves through the aquaporins by diffusion from an area having lower osmolarity to an area having higher osmolarity.

Answer 2

Mechanisms do the water molecules most likely move into the large intestine by passive transport from an area of high osmolarity to an area of low osmolarity.

Answer: Option B

Explanation:

Osmotic concentration is otherwise called as osmolarity. Normally osmosis happens from an area of higher concentration to lower concentration. During the process of digestion the required nutrients are absorbed by the body.

Then the water is absorbed in the large intestine by passive transport where no energy is required. Hence water molecules move into the large intestine by active transport from an area of high osmotic concentration to an area of lower osmotic concentration.