Answer:
:
Types: 1 Mark each
Cellsneed a source ofenergy.Theygetthisenergyby breaking down glucose obtained from the food. This process is called 'cellular respiration'.
There are 2 types of cellular respiration -
During aerobic respiration, glucose is broken downinto carbon dioxide and water in the presence of oxygen to release energy.
Duringanaerobic respiration,glucose is broken downinto alcohol andcarbon dioxidein the absence of oxygen to release a little bit of energy.