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02107020/CAPE/SPEC/KMS 2017
BIOLOGY
UNIT 1 – PAPER 02
KEY AND MARK SCHEME

Question 1 cont’d

5. Potassium ions will be moving from an area of low concentration
to an area of high concentration, thus active transport is going
to take place, meaning that there is a need for ATP (1). To
facilitate this, a protein pump is required. (1)

6. Glucose is moving from an area of high concentration to an
area of low concentration, therefore facilitated diffusion is
going to occur. (1) To facilitate this movement, either a
carrier protein or a protein channel can be used for its
transportation. (1)
[12 marks]

Total 30 marks