4 Answers - What are the phases of photosynthesis?

Photosynthesis has two stages. Stage 1 requires light. Stage 2 can work in the light or in the dark. The energy accumulated in Stage 1 is used to drive Stage 2.

SEPUP Photosynthesis Sim (Stage 2 Only)

2. State how the light-dependent and light-independent reactions are linked during photosynthesis.

Breaking down photosynthesis stages (video) | Khan Academy

3. As mentioned in the previous step, most of the G3P produced during the Calvin cycle - 10 of every 12 G3P produced - are used to regenerate the RuBP so that the cycle may continue. Ten molecules of the three-carbon compound G3P eventually eventually form six molecules of the four-carbon compound ribulose phosphate (RP). Each molecule of RP then becomes phosphorylated by the hydrolysis of ATP to produce ribulose bisphosphate (RuBP), the starting compound for the Calvin cycle.

what are the two stages of photosynthesis | …

2. The energy from ATP and the reducing power of NADPH (both produced during the light-dependent reactions) is now used to convert the molecules of PGA to glyceraldehyde-3-phosphate (G3P), another three-carbon compound. For every six molecules of CO2 that enter the Calvin cycle, two molecules of G3P are produced. Most of the G3P produced during the Calvin cycle - 10 of every 12 G3P produced - are used to regenerate the RuBP in order for the cycle to continue. Some of the molecules of G3P, however, are used to synthesize glucose and other organic molecules. Two molecules of the three-carbon G3P can be used to synthesize one molecule of the six-carbon sugar glucose. The G3P is also used to synthesize the other organic molecules required by photoautotrophs.

The photosynthesis equation is actually split into 2 stages: photolysis and carbon fixation.

· The stages of photosynthesis and what ..

The endergonic light-independent reactions of photosynthesis use the ATP and NADPH synthesized during the exergonic light-dependent reactions to provide the energy for the synthesis of glucose and other organic molecules from inorganic carbon dioxide and water. This is done by "fixing" carbon atoms from CO2 to the carbon skeletons of existing organic molecules. These reactions occur in the stroma of the chloroplasts.

These molecules are used as the energy source to carry out the chemical changes in the next stage of photosynthesis.

Stages of Photosynthesis - Process of Photosynthesis

Photophosphorylation is the production of ATP using the energy of sunlight. Photophosphorylation is made possible as a result of chemiosmosis. Chemiosmosis is the movement of ions across a selectively permeable membrane, down their concentration gradient. During photosynthesis, light is absorbed by chlorophyll molecules. Electrons within these molecules are then raised to a higher energy state. These electrons then travel through Photosystem II, a chain of electron carriers and Photosystem I. As the electrons travel through the chain of electron carriers, they release energy. This energy is used to pump hydrogen ions across the thylakoid membrane and into the space within the thylakoid. A concentration gradient of hydrogen ions forms within this space. These then move back across the thylakoid membrane, down their concentration gradient through ATP synthase. ATP synthase uses the energy released from the movement of hydrogen ions down their concentration gradient to synthesise ATP from ADP and inorganic phosphate.

The 2 stages are light-dependent stage and the light-independent stage

What are the two main stages in photosynthesis? | …

The action spectrum of photosynthesis is a graph showing the rate of photosynthesis for each wavelength of light. The rate of photosynthesis will not be the same for every wavelength of light. The rate of photosynthesis is the least with green-yellow light (525 nm-625 nm). Red-orange light (625nm-700nm) shows a good rate of photosynthesis however the best rate of photosynthesis is seen with violet-blue light (400nm-525nm).

The photosynthesis equation is actually split into 2 stages: photolysis and carbon fixation

What are the two stages of photosynthesis

There are three stages to the Calvin cycle: 1) CO2 fixation; 2) production of G3P; and 3) regeneration of RuBP. We will now look at each stage.