Waec Biology 1988 Past Questions and Answers

Question 6:

• WAEC 1988

THe bicuspid valve is located between the

A. Left auricle and left ventricle
B. Aorta and left ventricle
C. Superior vena cava and inferior vena cava
D. Right auricle and superior vena cava
E. Right auricle and right ventricle

Question 7:

• WAEC 1988

The pulmonary artery carries

A. Deoxygenated blood from the right ventricles to the lungs
B. Oxygenated blood from the right ventricle to the lungs
C. Oxygenated blood from the left ventricles to the ventricles to the right auricle
D. Deoxygenated blood from the left ventricles to the right auricles
E. Oxygenated blood from the lings to the right auricles

Question 8:

• WAEC 1988

Which of the following blood components has the greatest affinity for oxygen and carbondioxide?

A. Blood plasma
B. Leucocytes
C. Thrombocytes
D. Erythrocytes
E. Lymphocytes

Question 9:

• WAEC 1988

The thoracic cavity is separated from the abdominal cavity by a sheet of muscle called

A. Pleural membrane
B. Intercostal muscles
C. Diaphragm
D. Pericardium
E. Epiglottis

Question 10:

• WAEC 1988

Deamination is the process during which

A. Excess amino acid is broken down into ammonia and keto acid
B. Fats and oil are converted into an emulsion for absorption
C. Excess glucose is converted and store as glycogen in the liver
D. Glycogen is reconverted into glucose through the action of glucagon
E. Excess amino acid is converted into proteins