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2 marksNutrition in Living Organisms

CSEC Biology · January 2019 · Paper 2 · Question 1(a)

A meal sample was tested for reducing sugar and protein.

Outline the procedure used to prepare the sample for carrying out the food tests.

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Other parts of this question

  1. 1(b)Complete Table 1 by describing the procedure that is used to test for the presence of EACH food nutrient in the meal and the expected results if the food…[6 marks]
  2. 1(c)(i)Name ONE enzyme involved in the chemical digestion of carbohydrates and ONE enzyme involved in the chemical digestion of proteins in the alimentary canal.[2 marks]
  3. 1(c)(ii)Suggest ONE reason why it is important for the recovering child to eat adequate amounts of carbohydrates and THREE reasons why it is important for the…[4 marks]
  4. 1(d)(i)Suggest TWO ways in which the type of nutrition carried out by green plants differs from that carried out by humans.[2 marks]
  5. 1(d)(ii)Describe the procedure to test for the presence of starch in a leaf taken from a green plant.[3 marks]
  6. 1(d)(iii)Explain why plants store most carbohydrates in the form of starch instead of in the form of a reducing sugar.[2 marks]
  7. 1(d)(iv)Suggest TWO reasons why it is important for plants to store starch.[4 marks]

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