Yes, during intense exercise, muscles cell may use fat as a concentrated source of chemical energy. When oxygen is present, the fatty acid chains containing most of the energy of a fat are oxidized and fed into the citric acid cycle and the electron transport chain. Nonetheless, during intense exercise, oxygen is scarce in muscle cells, so ATP must be generated by glycolysis alone.
The primary source of energy for almost every ecosystem on Earth is the sun
Gregor Mendel<span> conducted hybridization experiments on around 29,000 </span>pea plants<span>. </span>Peas<span> were an ideal choice for </span>Mendel<span> to use because they had easily observable traits there were 7 of which he could manipulate. He began his experiments on </span>peas<span> with two conditions.</span>
