Final answer:
Organisms need to obtain energy via cellular respiration for photosynthesis, glycolysis, ATP production, growth, and reproduction.
Step-by-step explanation:
Why do organisms need to obtain energy via cellular respiration?
Organisms need to obtain energy via cellular respiration for several reasons:
- Photosynthesis: Organisms that are capable of photosynthesis, like plants, can convert solar energy into chemical energy in the form of glucose. Cellular respiration allows them to break down glucose to release stored energy when needed.
- Glycolysis: Cellular respiration begins with glycolysis, which is a process that occurs in all organisms to break down glucose into smaller molecules. This process yields a small amount of ATP, the energy currency of cells.
- ATP production: Breaking down ATP releases energy that is necessary for various cellular processes, such as metabolism and muscle contractions. Cellular respiration is responsible for replenishing ATP levels in the cell.
- Growth and reproduction: The energy obtained through cellular respiration is used for growth, development, cellular repair, and reproduction. Without energy from cellular respiration, organisms would not have the necessary resources to carry out these vital functions.
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