why do organisms need to obtain energy via cellular respiration?
to photosynthesize
to perform glycolysis
to grow and reproduce
to break down ATP
Organisms need to obtain energy via cellular respiration for several reasons:
1. To photosynthesize: Organisms that are capable of photosynthesis, such as plants, use cellular respiration to break down the glucose produced during photosynthesis and convert it into ATP, which is the usable form of energy for the cell.
2. To perform glycolysis: Glycolysis is the initial step in the breakdown of glucose and is therefore an essential part of cellular respiration. It occurs in the cytoplasm of the cell and is responsible for producing a small amount of ATP and other molecules that enter the subsequent stages of cellular respiration.
3. To grow and reproduce: Cellular respiration provides the necessary energy for growth and reproduction in organisms. Energy is required for cell division, synthesis of new molecules, and overall growth of the organism.
4. To break down ATP: ATP, or adenosine triphosphate, is the energy currency of the cell. It is constantly being broken down into ADP (adenosine diphosphate) and inorganic phosphate to release energy that can be used for various cellular processes. Cellular respiration generates the energy needed to continuously regenerate ATP for cellular activities.
Overall, cellular respiration is crucial for organisms to obtain energy from nutrients, break down ATP, and support vital functions such as growth, reproduction, and other cellular activities.