Let's Eat! When you get hungry, what do you do?. The definition of photosynthesis tells you that sunlight is needed for energy. Now. When carbon dioxide is the substrate. and when light is not otherwise limiting photosynthesis, the speed of RuBisCO responds positively to increasing carbon. Free photosynthesis process review. Study chloroplasts, the chemical equation, chlorophyll and the light and dark stages of photosynthesis. Life System and Environmental & Evolutionary Biology II Lab 10: Enzymes and Photosynthesis Kevin Griffin Part A: Overview: Photosynthesis is the process by which. Substrate. Definition. noun, plural: substrates (geology) A substratum or an underlying stratum. (chemistry) The substance acted upon by an enzyme. (biology) Biochemistry. In biochemistry, the substrate is a molecule upon which an enzyme acts. Enzymes catalyze chemical reactions involving the substrate(s). photosynthesis. In their experiment, they measured the oxygen yield of photosynthesis when Chlorella(unicellular. about 1000 substrate molecules per second). PHOTOSYNTHESIS Table of Contents What is Photosynthesis?. Calvin Cycle; c) chemiosmosis; d) substrate-level phosphorylation; e) Kreb's Cycle. 10. Substrate - Topic:Biology - Online Encyclopedia - What is what? Everything you always wanted to know photosynthesis (fō'tōsĭn`thəsĭs), process in which green plants, algae, and cyanobacteria utilize the energy of sunlight to manufacture carbohydrates from carbon.