Q16 of 9700_w21_qp_12

Question 16

Question 16 of 40

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Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.

A 1, 2 and 3 are correct

B 1 and 2 only are correct

C 2 and 3 only are correct

D 1 only is correct

Topics Tested

4. Cell membranes and tra...

4.2. Movement into and out of cells

describe and explain the processes of simple diffusion, facilitated diffusion, osmosis, active transport, endocytosis and exocytosis

2. Biological molecules

2.2. Carbohydrates and lipids

describe and draw the ring forms of α-glucose and β-glucose

7. Transport in plants

7.2. Transport mechanisms

explain how companion cells transfer assimilates to phloem sieve tubes, with reference to proton pumps and cotransporter proteins