Question 4
Question 4 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...
4.1. Fluid mosaic membranes

outline the main stages in the process of cell signalling leading to specific responses: • secretion of specific chemicals (ligands) from cells • transport of ligands to target cells • binding of ligands to cell surface receptors on target cells

15. Control and coordinat...
15.1. Control and coordination in m...

describe the sequence of events that results in an action potential in a sensory neurone, using a chemoreceptor cell in a human taste bud as an example

9. Gas exchange
9.1. The gas exchange system

describe the functions of ciliated epithelial cells, goblet cells and mucous glands in maintaining the health of the gas exchange system