Respiration is a vital process that takes place in all living organisms. It involves breaking down glucose to release energy, which is used for carrying out various life activities. There are two types of respiration: aerobic respiration, which requires oxygen, and anaerobic respiration, which does not use oxygen. The energy released is stored in a special molecule called ATP (adenosine triphosphate). Learning about respiration helps us understand how our bodies and other living things get the energy they need to live and grow. Use the questions below to test your understanding of this important process. 
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