aerobic and anaerobic respiration

• aerobic respiration is respiration that uses oxygen
• most of the reactions of aerobic respiration happen inside mitochondria
• glucose + oxygen -> carbon dioxide + water
• $C_6H_{12}O_6 +$$6O_2 \to 6CO_2 +$$6H_2O$
• glucose -> lactic acid
• anaerobic respiration is the breakdown of glucose in the absence of oxygen
• anaerobic respiration usually happens during exercise, when the body cannot provide enough oxygen to the muscles to perform aerobic respiration
• the word equation for anaerobic respiration in plants is: glucose -> ethanol + carbon dioxide
• anaerobic respiration in yeast cells is called fermentation
• in the food and drinks industry, fermentation by yeast is used to make bread and alcoholic drinks
• in bread-making, the carbon dioxide in fermentation makes the bread rise
• in beer and wine-making, the ethanol produced by the yeast causes the drinks to become alcoholic