9700/42

Biology 9700/42May/June 2013

Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme

10
questions
100
marks
120
minutes

Topics Photosynthesis · Classification, Biodiversity and Conservation · (outdated) Biotechnology · Energy and Respiration · Control and Coordination · Inheritance · +4 more

Q1PhotosynthesisFree sample

(a) A student investigated the effects of temperature and light intensity on the rate of photosynthesis of an aquatic plant.

Fig. 1.1 shows the results of the investigation.

(a)

With reference to Fig. 1.1:

(i)

describe the results of the investigation

3M
(ii)

suggest explanations for the results for high light intensity above 30 °C.

2M
(b)
(i)

Name the process in the light-dependent stage of photosynthesis that produces oxygen.

1M
(ii)

Name the photosystem involved in the production of oxygen in the light-dependent stage.

1M
(iii)

Explain why the volume of oxygen released from the plant does not give a true rate of photosynthesis.

1M

The rest of this paper

9 more questions
  • Q2Genetic Technology · Classification, Biodiversity and Conservation15M
  • Q3(outdated) Biotechnology8M
  • Q4Energy and Respiration · Control and Coordination · Inheritance16M
  • Q5(outdated) Aspects of Human Reproduction8M
  • Q6Homeostasis11M
  • Q7Inheritance · Selection and Evolution9M
  • Q8Selection and Evolution10M
  • Q9Classification, Biodiversity and Conservation · (outdated) Biotechnology15M
  • Q10Photosynthesis · Energy and Respiration · Control and Coordination15M
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