Respiration is the process in every living cell by which food is broken down and the energy in it is released for use. The energy is temporarily stored and moved around the cell in the form of ATP.
Word equation for aerobic respiration.
Glucose + oxygen —> carbon dioxide + water + ENERGY
Define Anaerobic respiration.
When oxygen is in short supply or absent, some types of cell can respire anaerobically (without oxygen). During period of intense activity, human muscles sometimes need more oxygen than the body can supply. The muscle cells use anaerobic respiration to partially breakdown glucose and release some of the energy from it.
Word equation for anaerobic respiration.
Glucose —> lactic acid + ENERGY
Anaerobic respiration is a much less efficient process than aerobic respiration, because the glucose is not fully broken down and so much less ATP is formed for each molecule of glucose used. Animal cells always respire aerobically when they can.
