University:
Arizona State University
Course:
BIO 181 | General Biology I
Academic year:

2022
Views:

156

Pages:

3
Author:

Hallie Randolph

Unit 3 Study Guide energy: ability to do work (cell function) ATP: Adenosine Triphosphate ATP Cycle - Energy is stored inside ATP. - ATP comes from glucose (C6H12O6). Cellular Respiration process of making glucose → ATP Photosynthesis process of making glucose Heterotroph - consumes glucose from food - ONLY cellular respiration Autotroph - makes their own glucose - ONLY photosynthesis PHOTOSYNTHESIS IS THE PROCESS OF MAKING SUGAR FROM SUNLIGHT. Light-Dependent Reaction (thylakoid) 1. Photolysis: the separation of molecules by the action of light a. Photosystem II (PSII) contains chlorophyll b. PSII takes an electron (e-) from H2O (water) c. Water splits into H+ and oxygen; oxygen leaves as gas 2. Chemiosmosis: the movement of hydrogen ions across the membrane a. e- starts journey down the Electron Transport Chain (ETC) b. e- leaves PSII and arrives at cytochrome complex (CC) c. e- opens the CC which allows H+ to move from the stroma to lumen (inside thylakoid) 3. NADP+ Reduction a. e- arrives at Photosystem I (PSI) b. light absorbed from PSI re energizes ec. NADP+ picks up e- and gets reduced to NADPH 4. ATP Synthase a. H+ wants to return to stroma b. H+ travels through ATP Synthase c. H+ powers ATP Synthase to make ADP to ATP Calvin Cycle (stroma) 1. Fixation a. RuBP is fixated to CO2 by rubisco b. RuBP is now phosphoglycerate 2. Reduction a. Phosphoglycerate is reduced to the e- from LDR by NADPH and ATP b. Phosphoglycerate is now G3P 3. Regeneration a. 5 G3P is recycled into RuBP b. 1 GRP goes to make glucose