MCQ Practice Questions 6

1. The diagram below shows the blood supply to the liver and gut.What are X, Y and Z?

artery / portal vein / vein
A. X / Y / Z
B. Y / Z / X
C. Z / X / Y
D. Y / X / Z

2. Blood entering the heart of a mammal from the posterior vena cava has most recently been in the
A. brain.
B. lungs.
C. left ventricle.
D. lower abdomen.

3. Human blood passes from the inferior (posterior) vena cava into the diastolic right atrium of the heart as a result of
A. a pressure differential between the atrium and the vena cava.
B. the closure of venous valves.
C. the closure of the tricuspid valve.
D. mass flow of blood.

4. Blood returning from the brain to the heart will enter the
A. right atrium
B. left atrium
C. right ventricle
D. left ventricle

5. The vein containing most glucose, amino acids, minerals and vitamins, after a meal is the
A. hepatic vein
B. renal vein
C. hepatic portal vein
D. pulmonary vein

6. Which of the following sequences represents the correct order of flow of blood in the heart when it enters from the pulmonary vein ?
1 right ventricle
2 right auricle
3 left auricle
4 aorta
5 left ventricle

A. 5 3 4 1 2
B. 2 1 3 5 4
C. 3 5 4 2 1
D. 1 2 4 5 3

7. Biological washing powders remove stains by enzyme action. Which of the following combinations would be most effective in removing an egg stain?
A. Amylase and protease
B. Catalase and lipase
C. Lipase and maltase
D. Lipase and protease

8. Which is the correct priority in a human body of using the following substances to release energy?
A. Glycogen, fat, tissue protein
B. Fat, glycogen, tissue protein
C. Tissue protein, glycogen, fat
D. Tissue protein, fat, glycogen

9. The concentration of a certain mineral ion in soil water is 50 parts per million (ppm). Inside the root hair cell vacuole, the same nutrient ion concentration is 200 ppm. This nutrient enters the root hair from the soil water by
A. diffusion.
B. osmosis.
C. filtration.
D. active transport.

10. Mitosis is essential and necessary in the unicellular organism for
A. tissue formation.
B. growth in size.
C. reproduction.
D. vacuolation.

ANSWERS
1. B
2. D
3. A
4. A
5. C
6. C
7. D
8. A
9. D
10. C