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Biology Past Questions and Answers

Jamb Biology Questions

Question 11:

Osmosis can be defined as the movement of

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A Molecules from solution of higher concentration to low concentration
B Molecules from solution of low concentration to high concentration
C Water from solution of high concentration to low concentration
D Water across a semi-permeable membrane from solution of low concentration to high concentration
E Water across a semi-permeable membrane from solution of high concentration to low concentration

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Question 12:

Which of the following statement is NOT true of enzymes? They

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A Are proteins
B Need cofactors to activate them
C Are sensitive in their action
D Are specific in their action
E Can withstand high temperature

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Question 13:

The dorsal and anal fins of fish are used for

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A Upward movement
B Controlling rolling
C Downward movement
D Steering
E Buoyancy

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Question 14:

Exoskeleton is NOT found in the

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A Maggot
B Mosquito larva
C Earth worm
D Caterpillar
E Termite

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Question 15:

Blood clotting is initiated by

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A Leucocytes
B Platelets
C Haemolymph
D Haemoglobin
E Erythrocytes

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