Overview: The life processes of photosynthesis and cellular respiration allow for the transfer of energy and matter. Students learn, in general terms, how energy from sunlight is transferred into adenosine triphosphate (ATP) and reduced nicotinamide adenine dinucleotide phosphate (NADPH) and eventually into glucose, and how carbohydrates are oxidized to produce reduced nicotinamide adenine dinucleotide (NADH), reduced flavin adenine dinucleotide (FADH) and eventually ATP. A detailed knowledge of metabolic intermediates is not required.