Jamb Biology Past Questions and Answers

Question 361:

• JAMB 1984

Blood clotting is initiated by

A. Leucocytes
B. Platelets
C. Haemolymph
D. Haemoglobin
E. Erythrocytes

Question 362:

• JAMB 1984

Pepsin is a digestive enzymes which breaks

A. Cellulose into glucose molecules
B. Carbohydrates into simple sugars
C. Protein into peptones
D. Fats into glycerol and fatty acid
E. Sucrose into glucose and fructose

Question 363:

• JAMB 1984

Anaerobic respiration in yeast produces

A. Carbondioxide and ethanol
B. Carbondioxide and water
C. Carbondioxide and oxygen
D. Carbondioxide and glucose
E. Ethanol and water

Question 364:

• JAMB 1984

Underground stems which grow horizontally through the soil are

A. Bulbs
B. Rhizomes
C. Runners
D. Corms
E. Stolons

Question 365:

• JAMB 1984

A man with normal haemoglobin (AA) marries a woman who has sickle-cell haemoglobin (SS). They have a child who has a sickle-cell trait. Which of the following genotypes could be associated with the child’s haemoglobin?

A. AA
B. OO
C. AO
D. AS
E. SS