Can someone me with these hypothesis or theory questions

Cellular respiration involves a series of chemical reactions. The enzymes increase the rate of the reactions. The reactions that are catalysed by enzymes actually helps the organism to grow, respond to various changes in the environment, reproduce and continue maintaining their own structures. Cellular respiration is also considered a part of the metabolism process. This process actually helps in carrying the oxygen through the blood.
Two types: Anaerobic and aerobic respiration
Anaerobic respiration doesn't use oxygen during its respiration process while the aerobic respiration uses oxygen.