Photosynthesis of carbon dioxide to carbohydrate, cellular respiration is the oxidation of carbohydrate or other nutrients to carbon dioxide. Nutrients used in cellular respiration include carbohydrates, amino acids and fatty acids. These nutrients are oxidized to produce carbon dioxide and water, and to release chemical energy to drive the organism's metabolism. Photosynthesis and cellular respiration are distinct processes, as they take place through different sequences of chemical reactions and in different cellular compartments. The general equation for photosynthesis as first proposed by Cornelis van Niel is therefore: Since water is used as the electron donor in oxygenic photosynthesis, the equation for
Ghetto Day/What I Need Picnic'." This sampling was also praised by Fred DeUar of "High Fidelity News and Record Review", who stated it was done "in the cause of better-class '90s pop." "Billboard" called the track "a languid, liquid sketch of a lazy city afternoon" and stated "it gets the nod as [the album's] likeliest knockout contender." Ron Wynn from AllMusic declared "What I Need" one of the album's best. "Billboard" Larry Flick labelled it a "floor-filler" and an "upbeat rouser." Another reviewer from the same publication thought "What I Need" was one of the hits to be had from "Storyteller". "Vibe" magazine stated