Waec Biology 1992 Past Questions and Answers

Question 11:

• WAEC 1992

The respiratory organ found in the cockroach is the

A. Air sac
B. Trachea
C. Lung book
D. Lung
E. Gill

Question 12:

• WAEC 1992

Which of the following organs is associated with deamination of proteins?

A. Lung
B. Stomach
C. Kidney
D. Liver
E. Heart

Question 13:

• WAEC 1992

Ultrafiltration in the kidney takes place in the

A. Loop of Henle
B. Renal vein
C. Bowman's capsule
D. Pelvis
E. Pyramid

Question 14:

• WAEC 1992

Which of the following is a structures functions as an excretory system found in flatworm?

A. Contractile vacuole
B. Nephridium
C. Flame cell
D. Malpighiam tubule
E. Kidney

Question 15:

• WAEC 1992

When an axon is at rest, the concentration of ions on either side of the membrane are different. Which of the following is correct about the concentrations of ions on either side of the membrane?

A. There is an excess of potassium ions inside the axon and an excess of sodium ions outside
B. The inside of the axon becomes positively charged while the outside is negatively charged
C. There is an excess of sodium ions on the inner side of the axon
D. Chloride and potassium ions begin to move acrossthe membrane
E. Calcium ions accumulate on the upper side of the axon