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8 marksAspects of Biochemistry

CAPE Biology Unit 1 · May/June 2026 · Paper 2 · Question 1(c)

Table 1 compares tensile strength, relative hydrogen bond index, and ease of degradation for plastic, corn starch, and cellulose.

Discuss how the molecular structure of corn starch and the molecular structure of cellulose explain the data shown in Table 1. Present your response in complete paragraphs covering corn starch and cellulose.

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Other parts of this question

  1. 1(a)(i)Complete the alpha and beta glucose structures on Figure 1 by correctly adding the missing OH and H groups.[4 marks]
  2. 1(a)(ii)On the diagram provided in Figure 2, complete the structure of the other monosaccharide which makes up sucrose.[2 marks]
  3. 1(a)(iii)State the name of the monosaccharide which makes up sucrose, other than glucose.[1 mark]
  4. 1(a)(iv)Outline a suitable procedure for determining if a new snack in a school cafeteria, made from legume chickpeas, contains starch and proteins, utilizing all of…[5 marks]
  5. 1(a)(v)A sample of chickpea snack was mixed with 2 ml absolute ethanol, shaken, allowed to settle, and the ethanol decanted into a tube with 2 ml cold water. The…[1 mark]
  6. 1(b)(i)Identify the THREE components labelled L, M, and N on Cell I.[3 marks]
  7. 1(b)(ii)Outline how any TWO visible features of the eukaryotic cells shown in Figure 3 support the endosymbiont theory.[4 marks]
  8. 1(b)(iii)State the function of any ONE named cellular component which is visible in ALL three cells.[2 marks]

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