The Sun<span> is the major </span>source of energy<span> for </span>organisms<span> and the ecosystems of which they are a part. Producers, such as plants and algae, use </span>energy<span> from sunlight to make food </span>energy<span> by combining carbon dioxide and water to </span>form<span> organic matter. This process begins the flow of </span>energy<span> through almost </span>all<span> food webs.</span>
Answer:
I think due to absence of ATP but I'm not sure.. Actin and myosin return to their unbound state causing the muscle to relax. Alternatively relaxation (failure) will also occur when ATP is no longer available.
I believe that cell fractionation is used to separate different cell parts.
Hope this helps.<span />
Answer:
Mitochondria
Explanation:
<em>The mitochondrion is a relatively small, double membrane organelle that primarily serves as the site of oxidative phosphorylation; a process that generates energy in the form of ATP for the running of cell's activities.</em>
Hence, a cell that requires a lot of energy might need a large number of mitochondria in order to meet the energy demand of the cell.
The answer is mitochondria.