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1 markNutrition in Living Organisms

CSEC Biology · January 2008 · Paper 2 · Question 1(d)(i)

Green papaya (paw paw) fruits can be used to soften meat by crushing and rubbing it on the meat before cooking.

What process might be taking place to soften the meat?

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Other parts of this question

  1. 1(a)(i)Describe the reaction rate between points A and B, and between points B and C in Figure 1.[2 marks]
  2. 1(a)(ii)What is the optimum temperature for the enzyme in this reaction?[1 mark]
  3. 1(b)Using information in Figure 1, construct in the space provided below, a table to show the data obtained by the student in investigating the rate of enzyme…[8 marks]
  4. 1(c)(i)If the enzyme used in this investigation were amylase, describe fully the method you would use to obtain the data for the graph. Identify the materials and…[7 marks]
  5. 1(c)(ii)Identify ONE source of error in the investigation.[1 mark]
  6. 1(d)(ii)Suggest why this may be so.[2 marks]
  7. 1(e)(i)Suggest TWO ways in which water helps the process of germination.[2 marks]
  8. 1(e)(ii)Apart from water, state TWO environmental conditions needed for germination.[2 marks]
  9. 1(f)(i)Name TWO important groups of microorganisms whose activities are influenced by environmental conditions.[2 marks]
  10. 1(f)(ii)Identify ONE cycle which depends on the activities of microorganisms.[1 mark]
  11. 1(f)(iii)Explain the importance of the microorganisms named in (f)(i) in natural cycles.[2 marks]

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