-light independent reaction. -occurs in stroma of chloroplast. 1.begins using RUBISCO (enzyme) to react CO₂ and RuBP (5C sugar) to form 3C sugar PGA. 2.PGA reduced using NADPH and ATP to form PGAL. -every turn of calvin cycle releases 1 PGAL and reforms RuBP with other PGAL molecules. -needs to turn 2 times to make 1 glucose molecule.
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The two stages of photosynthesis. Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.
https://www.boundless.com/biology/textbooks/boundless-biology-textbook/photosynthesis-8/overview-of-photosynthesis-80/the-two-parts-of-photosynthesis-373-11599/
In the light-independent reactions or Calvin cycle, the energized electrons from the light-dependent reactions provide the energy to form carbohydrates from carbon dioxide molecules. The light-independent reactions are sometimes called the Calvin cycle because of the cyclical nature of the process.
https://www.boundless.com/biology/textbooks/boundless-biology-textbook/photosynthesis-8/overview-of-photosynthesis-80/the-two-parts-of-photosynthesis-373-11599/
1. Light Dependent Reactions (LDR) - Needs light to occur. Makes ATP, NADPH, O2. 2. Light Independent Reactions (LIR) - May occur in light or dark. Converts CO2 to sugars. The ATP & NADPH accumulate & diffuse to the stroma where they are used to make sugar. ATP is a short-term energy carrier & main energy source for all cells.
http://science.halleyhosting.com/sci/ibbio/cellenergy/photosynnotes/photosyn/lightrxns2.htm
Rating Newest Oldest. Best Answer: Photosynthesis occurs in 2 parts- The light reactions and the Calvin Cycle. The light cycle is dependent on light. Within the chloroplast, are sacs of organelles called thylakoids. (A stacked bundle of these are called Granum.) The Thylakoids membranes contain chlorophyll.
https://answers.yahoo.com/question/index?qid=20081023094524AAdD9q7
Photosystem I (PS I) - Part of the LDR where chlorophyll is energized a 2nd time to make 2 NADPH. The reaction center of PS I uses light energy of 700 nm. Photosystem II (PS II) - Part of the LDR where photolysis occurs and chemiosmosis makes ATP via photophosphorylation.
http://science.halleyhosting.com/sci/ibbio/cellenergy/photosynnotes/photosyn/lightrxns2.htm
Section 16.3Photosynthetic Stages and Light-Absorbing Pigments. We now shift our attention to photosynthesis, the second main process for synthesizing ATP. In plants, photosynthesis occurs in chloroplasts, large organelles found mainly in leaf cells. The principal end products are two carbohydrates that are polymers of hexose (six-carbon) sugars: the disaccharide sucrose (see Figure 2-10) and leaf starch, a large, insoluble glucose polymer (Figure 16-33).
https://www.ncbi.nlm.nih.gov/books/NBK21598/
The light-independent reactions of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in the stroma, the fluid-filled area of a chloroplast outside of the thylakoid membranes.
https://en.wikipedia.org/wiki/Light-independent_reaction
These reactions take the products (ATP and NADPH) of light-dependent reactions and perform further chemical processes on them. There are three phases to the light-independent reactions, collectively called the Calvin cycle: carbon fixation, reduction reactions, and ribulose 1,5-bisphosphate (RuBP) regeneration. This process occurs only when light is available. Plants do not carry out the Calvin cycle during nighttime.
https://en.wikipedia.org/wiki/Light-independent_reaction
It is convenient to divide the photosynthetic process in plants into four stages, each occurring in a defined area of the chloroplast: (1) absorption of light, (2) electron transport leading to the reduction of NADP+ to NADPH, (3) generation of ATP, and (4) conversion of CO2 into carbohydrates (carbon fixation).
https://www.ncbi.nlm.nih.gov/books/NBK21598/
what are the three major processes that occur in light dependent reaction
The three major processes are ATP, NADPH, O2 that occur in light dependent reaction.