Which of the following sequences is correct?
A. 2, 3, 1
B. 1, 2, 3
C. 2, 1, 3
D. 3, 1, 2
2. The following graph shows blood glucose concentration in four individuals after the ingestion of glucose. Which of the glucose tolerance curves indicates a sufferer of mild diabetes?
Questions 3 and 4 refer to the following graph which shows the blood sugar level of a person who has consumed 50g of glucose at the time indicated.
The maximum level of blood sugar expressed as a multiple of the normal (resting) value is
A. 0.5
B. 0.67
C. 1.5
D. 12 696
4. Compared with normal levels, extra insulin and extra glucagons would be present at certain times during this two-hour period. Two of these times are
Extra insulin / Extra glucagon
A. 10.30 / 11.00
B. 10.30 / 11.30
C. 11.00 / 10.30
D. 11.30 / 10.30
5. The rate of water weed releasing bubbles under different temperatures is listed below.
Temp of water (°C) / Number of bubbles released per minute
10 / 0
20 / 5
25 / 10
30 / 25
40 / 5
Which of the following about the rate of photosynthesis cannot be deduced from the data?
A. The rate at 20°C was equal to that at 40°C.
B. There was no photosynthesis at 10°C.
C. The rate increased from 10°C to 30°C.
D. The rate at 40°C is lower than that at 25°C.
6. Which shows a result of deforestation and the effect it has on the environment?
Result / Effect
A. Fewer flowering plants / Reduced CO2 in air
B. Fewer trees / Increased humidity of air
C. More ground cover / Wind removes soil
D. More water drains away / Soil washed away
For question 7, refer to the following experiment.
Three groups of pea seeds were treated differently and put into three separate thermo flasks X, Y and Z. A thermometer was put in each flask with the bulb embedded in the seeds, and a plug of cotton wool was put at the neck of each flask. The readings of the thermometers were recorded at regular intervals for five days and are expressed as the above graph.
7. The temperature change shown by curve 3 was zero throughout the experiment. Which of the following explanations is/are correct?
1. There was no metabolic activities taking place in the pea seeds.
2. The accumulation of carbon dioxide inside the flask inhibited respiration.
3. The seeds had been sterilised.
A. 1 only
B. 2 only
C. 1 and 2 only
D. 1 and 3 only
8. What is the original source of energy that flows through a food chain?
A. Carbon dioxide
B. Glucose
C. Oxygen
D. Sunlight
9. The tissue that lines body cavities and covers body surfaces is
A. connective tissue
B. epidermal tissue
C. epithelial tissue
D. muscle tissue
10. Which processes can take place in a root hair cell when oxygen is not available?
A. active transport only
B. diffusion only
C. active transport and osmosis
D. diffusion and osmosis
11. Which one of the following most closely describes the denaturation of an enzyme?
A. a change in the activation energy of reaction
B. a change in the structure
C. the bursting of a cell surface membrane
D. the effect of temperature on the rate of the reaction
12. In a starving mammal, the food reserves in the body will be oxidized for energy according to the following sequence.
A. carbohydrate, protein fat
B. carbohydrate, fat, protein
C. fat, carbohydrate, protein
D. protein, fat, carbohydrate
13. Which of the following menu is most suitable for a person whose gall bladder has been removed?
A. cold chicken, salad, fresh orange
B. baked beans, bread and butter, ice cream
C. fried fish and chips, sweet rice
D. sausages, boiled potato and cream cake
14. Which of the following are adaptations of plants to absorb carbon dioxide rapidly?
A. arrangement of leaves on stem
B. green colour
C. large surface area
D. thick section through leaves
15. Which is the following is not directly involved in the process of blood clotting?
A. platelets
B. prothrombin
C. red blood cells
D. thromboplastin
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