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.
How ATP Provides Energy for Cells When you're active, your body needs energy. The food you eat provides the building blocks to keep your body healthy and active. But how does your body use food and stored energy to keep you running strong? ATP, the powerhouse molecule, provides the energy your body needs.