CSEC Integrated Science · May/June 2015 · Paper 2 · Question 4(a)(i)
Microorganisms and food preservation.
What is a microorganism?
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Practise this questionOther parts of this question
- 4(a)(ii)State ONE way by which the growth of mould on bread may be reduced.[1 mark]
- 4(b)(i)Name ONE microorganism that is used to make bread in the commercial industry.[1 mark]
- 4(b)(ii)Using the observations in the experiment, determine THREE conditions that are necessary for mould growth.[3 marks]
- 4(b)(iii)What is the effect of refrigeration on mould growth?[2 marks]
- 4(b)(iv)State whether there will be any mould growth if Terrance conducts the experiment in a vacuum (no air). Explain your answer.[2 marks]
- 4(c)Explain why it is not advisable for Terrance to eat bread that has mould growing on it.[1 mark]
- 4(d)Name TWO methods that can be used to preserve foods.[2 marks]
- 4(e)Bread is baked at temperatures that do not support mould growth. Explain why mould is MOST likely to grow on bread when it is exposed to the atmosphere.[2 marks]
More practice: the rest of this paper · more Matter and Cellular Organization questions · all CSEC Integrated Science past papers