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South Tuen Mun Government Secondary School
Biology Quiz 17
(A) Choose the best answer. (10 marks)
1. Which of the following statements about glycolysis is INCORRECT?
A. It is a series of processes that break down glucose into two 3-C compounds.
B. It is an enzymatic reaction.
C. It produces two molecules of ATP.
D. It occurs faster when oxygen is abundant.
2. Which of the following pathways in aerobic respiration that produces the greatest number of ATP per
molecule of glucose?
A. Krebs cycle
C. anaerobic respiration
B. oxidative phosphorylation
D. conversion of glucose into pyruvate
Directions : Questions 3 and 4 refer to the graph below, which shows the amount of carbon dioxide produced by
germinating seeds and dormant seeds.
3. Which of the following chemical substances can be used to test for the production of carbon dioxide?
A. concentrated nitric acid
B. sodium hydroxide solution
C. hydrogencarbonate indicator
D. alkaline pyrogallol
4. Which of the following can be deduced by the experiment?
A.
B.
C.
D.
Dormant seeds do not produce carbon dioxide by respiration.
Dormant seeds can absorb oxygen for aerobic respiration.
Germinating seeds have a higher respiratory rate as compared with dormant seeds.
Germinating seeds grows faster as compared with dormant seeds.
5. Which of the following process(es) does not require ATP as an energy source?
(i) active transport
(ii) cell division
(iii) diffusion
A. (i) and (ii) only
B. (iii) only
C. (ii) and (iii) only
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D. (i), (ii) and (iii)
6. Which of the following are produced by alcoholic fermentation?
(i) red wine
(ii) whisky
(iii) yoghurt
A. (i) and (ii) only
B. (ii) and (iii) only
C. (i) and (iii) only
D. (i), (ii) and (iii)
Directions : Questions 7 to 9 refer to the following experiment. The balloon inflated after a few days.
7. In the experiment, what is the gas that is produced to inflate the balloon?
A. oxygen
B. nitrogen
C. water vapour
D. carbon dioxide
8. What is the function of the paraffin oil?
A. It is used to prevent the entry of microorganisms from the air into the fresh grape juice.
B. It is used to prevent the evaporation of water from the fresh grape juice.
C. It is used to prevent the dissolving of oxygen into fresh graph juice.
D. It is used to prevent the evaporation of alcohol into the air.
9. How do you set up a control experiment to this set up?
A. You use the same set-up but the fresh grape juice is replaced by distilled water.
B. You use the same set-up but the fresh grape juice is boiled.
C. You use the same set-up but the fresh grape juice is replaced by fresh orange juice.
D. You use the same set-up but the yeast is added to the fresh grape juice.
10. Which of the following are the final products of aerobic respiration, alcoholic fermentation and lactic acid
fermentation respectively?
(i) ATP
(ii) carbon dioxide
(iii) lactic acid
(iv) ethanol
(v) water
Aerobic respiration
A. (i), (ii), (v)
B. (i), (ii)
Alcoholic fermentation
(i), (ii), (iv)
(ii), (iv)
Lactic acid fermentation
(i), (iii)
(i), (iii), (v)
C. (ii), (v)
D. (i), (v)
(iv)
(ii), (iv)
(iii), (v)
(i), (iii)
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(B) Answer the following questions. (30 marks)
1. The following diagrams show two experimental set-ups, both of them can be used to measure the rate of
respiration in living organisms.
(a) Set-up A and set-up B use the similar principle to measure the rate of respiration. Describe
(i) TWO similarities in the principle between the two set-ups,
(2 marks)
(ii) TWO differences in the principle between the two set-ups.
(4 marks)
(b) What is the function of
(i)
the tap in set-up A,
(ii)
the water bath in set-up A,
(iii) the 1 cm3 syringe in set-up B?
(3 marks)
(c) (i) Describe ONE possible error of set-up A.
(2 marks)
(ii) Based on your answer in (c) (i), suggest why set up B is a better one to measure the rate of
respiration.
(2 marks)
2. The following flow diagram shows part of the chemical pathway of respiration in a yeast cell. When
oxygen is used up, substance A will be changed to substance C; while when the oxygen supply is sufficient,
it is changed to substance B.
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(a) Name substances A, B and C. (Note : C is not carbon dioxide)
(3 marks)
(b) Copy the flow diagram into your exercise book, indicate on the flow diagram where and how many
carbon dioxide molecules are produced in the pathway.
(3 marks)
(c) Copy the following table into your exercise book, state whether ATP, NADH, FADH are produced in
each process with a “” or “X”.
(3 marks)
Process
ATP
NADH
FADH
Glucose  substance A
6-C compound  4-C compound
Substance A  substance C
“” = the substance is produced
“X” = the substance is not produced
(d) Describe what happens to substance A in a human skeletal muscle cell instead of a yeast cell during and
after heavy exercise.
(3 marks)
3. The graph below shows the blood lactate (lactic acid) concentration at different levels of exercise intensity
of an athlete before training (pre-training) and after some period of training (post-training):
(a) Based on the graph,
(i) describe how the training affects the accumulate of lactate (lactic acid) in the blood.
(ii) according to your answer in (i), explain why training is beneficial to the athlete.
(b) Suggest a cause for the change in (a) (i) after the athlete is trained.
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(1 mark)
(2 marks)
(2 marks)
South Tuen Mun Government Secondary School
Biology Quiz 17
Marking Scheme
(A) Choose the best answer. (10 marks)
1. D
2. B
6. A
7. D
3. C
8. C
4. C
9. A
5. B
10. A
(B) Answer the following questions. (30 marks)
* spelling must be correct
1. (a) (i) In both A and B, the living organisms take in oxygen and give out carbon dioxide, while carbon
dioxide is absorbed in the tube OR both use the intake of oxygen as the principle to measure the rate of
respiration (1).
In both A and B, the volume / pressure decrease / change is used to measure the rate of respiration. (1)
In both A and B, the decrease in volume / pressure decrease / change is compared with the air pressure
in the atmosphere / the control tube. (1)
In both A and B, the difference in liquid level in the capillary tube per unit time is used as a
measurement of the rate of respiration.
[Any two – maximum 2 marks; accept other reasonable answers]
(ii) In A, soda lime is used to absorb carbon dioxide (1) while in B, potassium hydroxide solution is used
to absorb carbon dioxide. (1)
In A, the volume / pressure decrease / change is compared with the atmospheric pressure (1) while in
B, the volume / pressure decrease / change is compared with a control tube (1).
[Accept other reasonable answers]
(b) (i) the tap is open to equalize the pressure inside the tube and the atmospheric pressure (1).
(ii) water bath is used to keep the temperature of the boiling tube constant (1).
(iii) the syringe is used to adjust the volume / pressure of the air inside the control tube so as to equalize
air pressures of the two tubes. (1)
(c) (i) The set-up A does not have a control (1) so that the movement of liquid in the capillary tube may be
affected by the change of atmospheric pressure (1).
(ii) The tube without the maggots / small organisms acts a control tube (1) so that the change of
atmospheric pressure / temperature does not affect the result of the experiment (1).
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2. (a) A - * pyruvate / 3-C compound (1)
B - * acetyl coenzyme A (1)
(b) Position correct (½ x 3); Number of carbon dioxide correct (½ x 3)
C - * alcohol / ethanol (1)
(c) (1 mark for each correct row)
Process
ATP
NADH
FADH
Glucose  substance B


X
6-C compound  4-C compound



Substance A  substance C
X
X
X
(d) During heavy exercise, substance A is changed to lactic acid (1). After heavy exercise, some lactic acid
is changed to glucose / glycogen for storage (1); some lactic acid is broken down to carbon dioxide and
water in the presence of oxygen (1).
3. (a) (i) In post-training, the accumulation of lactate (lactic acid) in the blood starts to increase at a higher
exercise intensity as compared with the pre-training OR at higher exercise intensity, the blood lactate
(lactic acid) level of pre-training is higher than that of post-training (1).
(ii) As the accumulation of lactate (lactic acid) is slower / less in the athlete after his / her training (1),
he / she will not become fatigue easily (1).
(b) The depth or rate of breathing / depth or rate of heart beat increases more rapidly OR the function of the
lung / heart is better (1), so the supply of oxygen to the skeletal muscle is faster / more, thus skeletal
muscle relies less on anaerobic respiration for the release of energy. (1)
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