Mitochondria. Muscle cells need more energy over a short period of exercise than most other cells. The cell uses mitochondria to transform food energy into a energy source it can use for its reactions.
Likely mitochondria as muscles cells require more energy to do work
The nuclei is one organelle that is important to the muscle system. This is because the nuclei helps the muscle system develop.
Organelles
organelles
Mitochondria
Mitochondria. Mitochondria are organelles specialized for synthesizing ATP.
organelles
Myofibrils
Cells that are highly metabolically active have a high energy requirement for metabolic processes. Such cells include liver cells, muscle cells and sperm cells. These types of cell therefore have high numbers of mitochondria, the organelles that act as the site of aerobic respiration. This is because they need a plentiful supply of ATP (adenosine triphosphate, the energy-carrier molecule) for metabolic processes.
It depends on the function of the cell. For example: the muscle cells require a great deal of energy and so require many mitochondria per cell.
Well, your body always has some kind of energy. If you eat, then it can use the food for energy for quite a while. If that runs out because you haven't eaten for a long time, then your body will start using fat for energy. If that runs out, then it will start using muscle (which is very bad, since your heart is a muscle). If you are very low on immediately available energy, your body will react by making you feel tired, so that it has time to convert more energy while your body sleeps.
mitochondria