Photosynthesis & Cellular Respiration (Cellular Energy)

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Light-dependent reactions

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Set of reactions in photosynthesis that use energy from light to produce ATP and NADPH.

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Pigments

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Molecules that absorb, reflect, or transmit light.

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Calvin Cycle

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Light-independent reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugar (glucose).

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Krebs Cycle

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Pyruvic acid is broken down into carbon dioxide and NADH & FADH2 are made in a series of energy-extracting reactions.

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Cellular Respiration (aerobic)

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Process that releases energy (ATP) by breaking down glucose and other food molecules in the presence of oxygen.

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ATP (Adenosine Triphosphate)

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Main energy source that cells use for most of their work.

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Photosynthesis

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Process by which plants use the sun's energy to convert water and carbon dioxide into sugars (glucose) and oxygen.

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Fermentation

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Respiration that does not require oxygen, including lactic acid and alcoholic fermentation.

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Electron Transport Chain

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A series of proteins in which the high-energy electrons from the Krebs cycle are used to convert ADP into ATP.

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Glucose

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A simple sugar that is an important energy source in living organisms.