Quelpr
4 marksAspects of Biochemistry

CAPE Biology Unit 1 · 2013 · Paper 2 · Question 1(b)(iii)

Figure 1 is a diagrammatic representation of the molecular structure of a short section of a glycogen molecule.

Amylose (starch) and cellulose are both polymers of glucose molecules but they differ in their structure and function in plant cells. With reference to ONE structural property, briefly explain the functional differences of amylose and cellulose in plant cells.

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)(i)State the nutrient being tested for, by EACH of the following tests: Biuret, Benedict's, Lugol's Iodine, Grease spot.[2 marks]
  2. 1(a)(ii)Using the data presented in Table 1, determine TWO food substances which contain all four nutrients being tested for in this investigation.[1 mark]
  3. 1(a)(iii)With reference to the qualitative results given in Table 1, suggest which foods are good sources of nutrients for cell structure and growth of the cell, and…[4 marks]
  4. 1(b)(i)Using a labelled arrow on Figure 1, highlight the location of EACH of the following: a) An alpha 1,4-glycosidic linkage b) An alpha 1,6-glycosidic linkage.[2 marks]
  5. 1(b)(ii)In the space below, sketch the general shape of one glycogen molecule. [Details of individual glucose residues are NOT required.][2 marks]

More practice: the rest of this paper · more Aspects of Biochemistry questions · all CAPE Biology Unit 1 past papers