Difference Between Light and Dark Reaction

What is the difference between light and dark reaction? The light reaction is the initial stage of photosynthesis which traps light energy to produce ATP and NADPH, whereas dark reaction is the second step of photosynthesis which utilizes the energy from ATP and NADPH to produce glucose.

1. What is the linkage between the light and dark reactions?
2. What is the difference between light reactions and Calvin cycle?
3. What is dark reaction?
4. Where does light reaction and dark reaction take place?
5. Why is it important in photosynthesis that there is a light and dark reaction?
6. What materials are needed for light reactions?
7. What are the 3 stages of Calvin cycle?
8. What are the 7 steps of light-dependent reactions?
9. What are the steps of dark reaction?
10. What is another name for dark reaction?
11. Why is ATP needed for dark reactions?
12. Why are dark reactions inappropriate?

What is the linkage between the light and dark reactions?

What is the linkage between the light and dark reactions? The light reactions produce ATP and NADPH, and the dark reactions require ATP and NADPH. ... The dark reactions convert carbon dioxide to sugar.

What is the difference between light reactions and Calvin cycle?

Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle. Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. The Calvin cycle, which takes place in the stroma, uses energy derived from these compounds to make GA3P from CO₂.

What is dark reaction?

: any of a series of chemical reactions in photosynthesis not requiring the presence of light and involving the reduction of carbon dioxide to form carbohydrate especially : calvin cycle.

Where does light reaction and dark reaction take place?

The light reaction takes place in the thylakoid discs. There, water (H₂0) is oxidized, and oxygen (O₂) is released. The electrons freed up from water are transfered to ATP and NADPH. The dark reaction occurs outside of the thylakoids.

Why is it important in photosynthesis that there is a light and dark reaction?

What is the importance of the light and dark reactions in photosynthesis? During the light reactions of photosynthesis, light energy from the sun is captured and used to make ATP and NADPH. During the dark reactions, ATP, NADPH, and carbon dioxide combine to make glucose and other compounds.

What materials are needed for light reactions?

The reactants of photosynthesis are carbon dioxide and water. These are the molecules necessary to begin the process. But one more item is necessary, and that is sunlight. All three components, carbon dioxide, water, and the sun's energy are necessary for photosynthesis to occur.

What are the 3 stages of Calvin cycle?

The Calvin cycle reactions can be divided into three main stages: carbon fixation, reduction, and regeneration of the starting molecule.

What are the 7 steps of light-dependent reactions?

Terms in this set (7)

• (1st Time) Energy is absorbed from the sun.
• Water is broken down.
• Hydrogen ions are transported across the thylakoid membrane.
• (2nd Time) Energy is absorbed from the sun.
• NADPH is produced from NADP+.
• Hydrogen ions diffuse through the protein channel.
• ADP becomes ATP.

What are the steps of dark reaction?

Sequential steps involved in Dark reactions/Calvin cycle/ Carbon fixation The carbon fixation cycle has three phases: phase I is carbon fixation (each molecule of ribulose 1,5– biphosphate + CO₂ 2 molecules of 3–phosphoglycerate); phase II is reduction (each molecule of 3–phosphoglycerate + ATP + NADPH glyceraldehyde 3 ...

What is another name for dark reaction?

The Calvin cycle, light-independent reactions, bio synthetic phase, dark reactions, or photosynthetic carbon reduction (PCR) cycle of photosynthesis are the chemical reactions that convert carbon dioxide and other compounds into glucose.

Why is ATP needed for dark reactions?

Dark reaction is also known as Calvin Benson cycle. In this reaction the sunlight is not needed. The ATP is formed in first step of the photosynthesis and used in the body for the energy so the inorganic needs to be transformed into the carbohydrate. ... So the ATP is necessary in the dark reaction.

Why are dark reactions inappropriate?

However, the term dark reaction can be misleading because it implies incorrectly that the reaction only occurs at night or is independent of light, which is why most scientists and instructors no longer use it. ... Light reactions harness energy from the sun to produce chemical bonds, ATP, and NADPH.