U.C.E BIOLOGY 2009 PAPER 1 QN 30

Table 3. Shows the change in mass of starch and protein in a typical pea seed during the first 20 days of germination.

TABLE 3

a) Using the same axes, draw two graphs to show the change in mass of starch and protein during the first 20 days of germination of the seed, in the space provided.

b) How are the changes in mass of starch and protein

(i) Similar?

(ii) Different?

c) Explain why the mass of starch and proteins change in the germinating seed. In each case state the reactions that result into the changes.

d) Suggest two ways in which the products from each of starch and proteins may be used in the germinating seed.

(i) Starch

(ii) Proteins

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