every living cell in your body is a miniature battery. Your ability to expend energy is very much dependent on the energy you have stored, and your cells’ ability to discharge it on demand. <span>A well functioning body will have a much greater ability to store and discharge energy. It will be able to work a lot longer before it becomes exhausted and before it needs to rest.</span>
It is carbohydrates since in the mouth there are enzymes responsible for digestion of carbohydrates.
Answer;
-Pumps require energy for transport because they move material against an electrochemical gradient, but channels and carriers do not use energy because they only facilitate diffusion down a molecule's or ion's electrochemical gradient.
Explanation;
-Permeability is conferred by two classes of membrane proteins, pumps and channels. Pumps use a source of free energy such as ATP or light to drive the thermodynamically uphill transport of ions or molecules. Pump action is an example of active transport.
-Channels, in contrast, enable ions to flow rapidly through membranes in a downhill direction. Channel action illustrates passive transport, or facilitated diffusion.
The origin of the frontal is muscle is the forehead.