WAEC Biology Past Questions & Answers - Page 101

501.

During the process of osmosis, a semi-permeable membrane allows

A.

only solute molecules to pass through it

B.

both solute and solvent molecules to pass through it

C.

only solvent molecules to pass through it

D.

only gaseous molecules to pass through it

Correct answer is C

No explanation has been provided for this answer.

502.

The physical process which occurs when a red blood cell is placed in distilled water causing it to burst and break down is known as

A.

crenation

B.

plasmolysis

C.

turgidity

D.

haemolysis

Correct answer is D

No explanation has been provided for this answer.

503.

The folded portion of mitochondrion is called

A.

cristae

B.

cell membrane

C.

nucleolus

D.

partition

Correct answer is A

No explanation has been provided for this answer.

504.

Which of the following parts of a cell is not an organelle?

A.

Food vacuole

B.

Mitochondrion

C.

Cell wall

D.

Nucleus

Correct answer is A

No explanation has been provided for this answer.

505.

The structure used for movement in Amoeba is

A.

cilia

B.

pseudopodia

C.

flagella

D.

endoplasm

Correct answer is B

No explanation has been provided for this answer.