Photosynthesis provides the ingredients for the mitochondria to perform cellular respiration. Cellular respiration then provides the ingredients needed to perform photosynthesis. And it goes on and on in a cycle
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During an <u>isometric</u> contraction, the muscle develops tension without changing in length. An isometric contraction occurs at the <u>beginning</u> of a muscle contraction and during prolonged activities. During an isotonic contraction, the muscle shortens even though the level of <u>tension</u> is maintained. During an isotonic contraction, a <u>load</u> can be moved. The act of a muscle-maintaining tension while it lengthens is called an isotonic <u>eccentric </u>contraction. During an isotonic eccentric contraction, a muscle is allowed to <u>lengthen</u> without going limp.
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The tree absorbs light energy from sunlight, converting the light energy into chemical potential energy stored in chemical bonds. The tree uses this energy to build leaves and branches and fruit. When the apple hits the ground, kinetic energy is transformed into heat energy.
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