Quelpr
4 marksNutrition in Living Organisms

CSEC Biology · January 2017 · Paper 2 · Question 1(a)(i)

Students conducted an experiment to investigate the rate of reaction of Enzyme X at different temperatures. Table 1 shows the results.

Plot the data in Table 1 on the grid below.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)(ii)Use the graph plotted in (a)(i) to identify the optimum temperature for Enzyme X.[1 mark]
  2. 1(a)(iii)Account for the shape of the graph: Between 5 °C and 30 °C[2 marks]
  3. 1(a)(iii)Account for the shape of the graph: Above 40 °C[2 marks]
  4. 1(a)(iv)State ONE precaution that the students should take when carrying out this experiment.[1 mark]
  5. 1(b)(i)Name TWO enzymes that break down protein.[2 marks]
  6. 1(b)(ii)Name TWO parts of the human alimentary canal where enzymes that break down protein are found.[2 marks]
  7. 1(b)(iii)Suggest TWO reasons why the different enzymes for breaking down proteins are located in two different parts of the alimentary canal.[2 marks]
  8. 1(c)(i)Identify the type of relationship that exists between the peanut plant and the bacteria.[1 mark]
  9. 1(c)(ii)Explain your answer in (c)(i) on page 6.[3 marks]
  10. 1(c)(iii)Describe a suitable procedure for testing the presence of protein in peanuts.[3 marks]
  11. 1(c)(iv)Suggest TWO reasons why plants need protein.[2 marks]

More practice: the rest of this paper · more Nutrition in Living Organisms questions · all CSEC Biology past papers