CSEC Human and Social Biology · January 2010 · Paper 2 · Question 2(c)
Suggest TWO ways by which human beings return carbon dioxide to the atmosphere.
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- 2(a)(i)Complete the word equation for photosynthesis: [blank] + [blank] --(light / chlorophyll)--> sugar + [blank].[3 marks]
- 2(a)(ii)In what form, starch or glycogen, is sugar stored in plants?[1 mark]
- 2(b)(i)Identify ONE plant food rich in carbohydrates and ONE plant food rich in proteins.[2 marks]
- 2(b)(ii)Suggest ONE way the human body uses carbohydrate and ONE way it uses protein.[2 marks]
More practice: the rest of this paper · more Photosynthesis and Energy Flow questions · all CSEC Human and Social Biology past papers