page 03 4. The list shows some events that occur in the cell membrane of a neuron during nerve transmission. 1. Binding of neurotransmitter to neuron 2. Closure of voltage-gated ion channels 3. Opening of ligand-gated ion channels 4. Opening of voltage-gated ion channels Which events contribute to the depolarisation of the resting potential of a neuron? A 1 and 2 only B 2 and 3 only C 1, 2 and 3 only D 1, 3 and 4 only 5. Which row in the table describes the expected effects of inhibition of the Na/KATPase? Intracellular Na ion concentration Intracellular K ion concentration Membrane polarity A increase decrease increase B decrease increase increase C increase decrease decrease D decrease increase decrease 6. A decrease in the activity of glucose symport proteins in the cells lining the small intestine could be caused by an increase in the A glucose concentration inside the small intestine B sodium ion concentration in the cells C ATP concentration in the cells D potassium ion concentration in the cells. [Turn over