Question

all living cells require energy for various activity by the breakdoen of simple carbohydates either using oxygen or without using oxygen 1 how does gaseous exchange take places​

Answer 1

Glycolysis, which is the first step in all types of cellular respiration is anaerobic and does not require oxygen. If oxygen is present, the pathway will continue on to the Krebs cycle and oxidative phosphorylation. However, if oxygen is not present, some organisms can undergo fermentation to continually produce ATP.