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Attempt either subpart (a) or (b) :
(a) Electrical impulses are an excellent means to respond to stimuli in animal bodies. List any two limitations to the use of electrical impulses.
(a) Electrical impulses are an excellent means to respond to stimuli in animal bodies. List any two limitations to the use of electrical impulses.
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(a) (i) Electrical impulses will reach only those cells that are connected by nervous tissue, not each and every cell in the animal body. (1 Mark)
(ii) Once an electrical impulse is generated in a cell and transmitted, the cell will take some time to reset its mechanisms before it can generate and transmit a new impulse / cell cannot continuously create and transmit electrical impulses. (1 Mark)
(ii) Once an electrical impulse is generated in a cell and transmitted, the cell will take some time to reset its mechanisms before it can generate and transmit a new impulse / cell cannot continuously create and transmit electrical impulses. (1 Mark)