maybe it's called osmosis?
Answer:
The answer is basically that having nerve cells reproduce can do more harm than good. Each nerve cell has a specific place in our nervous system. ... Adding new nerve cells would mess up these very specific connections in a very complex system.
The molecule necessary for respiration to occur in both plants and animals is NADH or Nicotinamide Adenine Dinucleotide Hydride. This compound is necessary for cellular development and energy production: It's crucial to produce energy from the food one consumes. It's also the principal carrier of electrons in the energy-producing process in the cells.
OR
Cellular respiration requires energy from an organic source (ie- glucose and oxygen). Without these, the reactions cannot take place. Oxygen is also needed. It acts as the final electron acceptor in electron transport.
