Marine Corps Physical Fitness Test. Fitness is essential to the day-to-day effectiveness and combat readiness of the Marine Corps. The Marine Corps considers physical fitness an indispensable aspect of leadership.
A: Chemical energy is for producing heat in the human body to sustain vital functions, converting solar energy in plants through photosynthesis, producing electrical energy in batteries to power devices and burning fossil fuels in combustion engines to produce heat or motion.
Chemistry explains how your cells produce energy and proteins, why you breathe and have blood and what sorts of foods and vitamins are important for nutrition. With a basic understanding of chemistry, you can understand why your organs function the way they do and how the systems of your body work together. The Chemistry of Cells Chemistry explains how your cells function. Perhaps the most important chemical reactions in the body involve adenosine triphosphate, or ATP. ATP is used to temporarily store energy from food, which cells can later convert to the energy they need to function. Chemistry also explains how cells are built.