For the synapse question, how does the neuron pass the synapse? i put electrical impulses. but some people put chemicals are released so i hope the mark scheme will allow my answer. i also ticked the second box for the pyramid of biomass, i wrote exercise and proportion of muscle to fat affects the metabolic rate. i put the woman is 77 years old. i reallyyyy hope the grade boundaries are low because the paper was tooooo long! 9 questions! Normally its 7 or 8! i think to get an A* you'll need atleast 38/39 marks out of 60.