1. If R was a pain receptor, which pathway shows the effect of the moving of hand away due to touching a very sharp pin?
A. R, T, S
B. R, U, V, P
C. R, U, V, P, Q, S
D. R, U, V, P, Q, T, S
2. If nerve U was severed (cut), which of the following statements will be true?
A. The sensation of pain will be felt slower.
B. The hand will not be moved when touching a sharp object.
C. No impulse will be flowing in the nerves
D. No pain will be sensed.
3. Which of the pathway shows the effect of moving the hands voluntarily?
A. R, T, S
B. R, U, V, P
C. P, Q, S
D. P, Q, T, S
4. When the skin is cut, the blood forms clots. In which order would the components of the blood become involved?
First ----------------------> Last
A. Fibrin, Platelet, Red blood cell, Fibrinogen
B. Fibrinogen, Red blood cell, Platelet, Fibrin
C. Platelet, Fibrin, Fibrinogen, Red blood cell
D. Platelet, Fibrinogen, Fibrin, Red blood cell
5. Which row of the table shows the difference between the pulmonary artery and the aorta?
Pulmonary artery / Aorta
A. carries blood with a lot of oxygen / carries blood with a little oxygen
B. carries a lot of carbon dioxide / carries little carbon dioxide
C. takes blood away from the heart / takes blood to the heart
D. transports cool blood / transports warm blood
6. Which blood vessel carries blood with the lowest concentration of urea?
A. Hepatic portal vein
B. Pulmonary vein
C. Renal vein
D. Vena Cava
7. Emphysema reduces gas exchange by ___________________________.
A. increasing the concentration gradient.
B. increasing the thickness of the gas exchange surface.
C. reducing the thickness of the gas exchange surface.
D. reducing the surface area of the alveoli.
8. Which of the following features is always true about the trophic levels of an ecosystem?
A. The higher the trophic level, the more the energy they need.
B. The higher the trophic level, the bigger the size of the organisms.
C. The lower the trophic level, the bigger the number of organisms.
D. The lower the trophic level, the more the biomass.
9. The events listed occur during contraction of the pupils of the eye in response to increased light intensity.
1. Impulse pass along motor neurone.
2. Contraction of circular iris muscles.
3. Stimulation of the retina.
4. Impulses pass along sensory neurone.
What is the correct order of these events?
First ----------------------> Last
A. 1, 4, 2, 3
B. 2, 1, 3, 4
C. 3, 1, 4, 2
D. 3, 4, 1, 2
10. Blood glucose level is regulated by the hormones insulin and glucagon. The graph shows the amount of glucose, insulin and glucagon in the blood before and after a person ate a meal.
Which row in the table shows the correct changes in the amount of each substance?
Line X / Line Y / Line Z
A. glucose / glucagon / insulin
B. insulin / glucose / glucagon
C. glucose / insulin / glucagon
D. glucagon / glucose / insulin
3 comments:
i thought qn 8 prac 5 is not true for ans D? producers should have the highest biomass?
ya i know why it is correct alr. producers are the lowest trophic level :)
producers are always at the first trophic level, which is the lowest, hence they always have the biggest biomass.
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