Question

brenda ran a 5 km race. during the race, she began to breathe heavily, and some of her muscles began to burn. which of these explains why brenda felt a burning in her muscles during the race.

A)the cells did not have enough oxygen , so they used fermintation as a source of energy
B)he cells did not have enough glucose, so they used fermintation as a sourceof energy
C)the cells had too much glucose, so they used respiration as a source of energy
D)the cells had too much carbon dioxide so they used aerobic respiration as a source of energy

Answer 1

@AngeI

Answer 2

I think it's A but yeah @AngeI should double check

Answer 3

Adrian is the smarty pants, i dunno how to do this