IGCSE Biology Paper-2: Specimen Questions with Answers 3 - 4 of 203

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Passage

The diagram shows two solutions of strong glucose and weak glucose solution, which are separated by a partially permeable membrane. This membrane will allow the transfer of water molecules not glucose molecules.

Picture Shows Two Different Glucose Solutions

Question 3 (1 of 2 Based on Passage)

Question

MCQ▾

The diagram shows two solutions of strong glucose and weak glucose solution, which are separated by a partially permeable membrane. This membrane will allow the transfer of water molecules not glucose molecules. As a result?

Choices

Choice (4)

a.

No change will occur in both solutions

b.

Water can move from the left to right

c.

Water can move from the right to the left

d.

From left to right against their concentration gradient

Answer

c.

Explanation

The diagram shows two glucose solutions of strong glucose and weak glucose solution, which are separated by a partially permeable membrane. This membrane will allow the transfer of water molecules not glucose molecules. As a result water can move from the right, where there is high concentration of water molecules is present, to the left, where water concentration is low.

Question 4 (2 of 2 Based on Passage)

Question

MCQ▾

The above diagram shows which type of process?

Choices

Choice (4)

a.

Osmosis

b.

Reverse osmosis

c.

Dissolution

d.

Active transport

Answer

a.

Explanation

Osmosis is the result of diffusion by a semipermeable membrane. A semipermeable membrane separates two different concentration՚s solution and movement across the membrane from the low solute concentration to the more solute concentrated solution. This process is called osmosis.

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