Photosynthesis uses carbon dioxide and water to make oxygen and high energy sugars like glucose. Respiration takes in oxygen and glucose and turns it back into carbon dioxide and …

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This unit is part of the Biology archive. Browse videos and articles by topic. For our most up-to-date, mastery-enabled courses, check out [High School Biology] …

Jul 17, 2016 · What is photosynthesis? Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, …

Photosynthesis Explore how light-dependent reactions capture energy to produce ATP and NADPH. Understand how the Calvin cycle uses these molecules to fix carbon and build …

Learn AP Biology using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of biochemistry, cell biology, genetics, evolution, and ecology, and develop …

Biology at Khan Academy explores life in all its forms, from humans to bacteria and how living things convert energy, grow, and reproduce. The course covers key biological molecules, the …

Learn biology using videos, articles, and NGSS-aligned practice. Review the fundamentals of cell biology, organism growth and reproduction, photosynthesis, cellular respiration, ecology, …

Apply your understanding of photosynthesis in organisms in this set of free practice questions aligned to NGSS standards.

Not all forms of energy can be directly converted into ATP. The body primarily transforms the chemical energy from food into ATP, and plants convert light energy into chemical energy to …