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1 markMatter and Cellular Organization

CSEC Integrated Science · May/June 2015 · Paper 2 · Question 4(b)(i)

An experiment investigating mould growth under varying conditions of moisture and temperature.

Name ONE microorganism that is used to make bread in the commercial industry.

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Other parts of this question

  1. 4(a)(i)What is a microorganism?[1 mark]
  2. 4(a)(ii)State ONE way by which the growth of mould on bread may be reduced.[1 mark]
  3. 4(b)(ii)Using the observations in the experiment, determine THREE conditions that are necessary for mould growth.[3 marks]
  4. 4(b)(iii)What is the effect of refrigeration on mould growth?[2 marks]
  5. 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]
  6. 4(c)Explain why it is not advisable for Terrance to eat bread that has mould growing on it.[1 mark]
  7. 4(d)Name TWO methods that can be used to preserve foods.[2 marks]
  8. 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]

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