Table of Contents
What are the light-dependent reaction in photosynthesis?
The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.
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 is light reaction with diagram?
Lesson Summary
| The Light Dependent Reactions | ||
|---|---|---|
| Location of Reaction | On the thylakoid membrane at the PSII molecule | On the thylakoid membrane at the the PSI molecule |
| Sunlight’s Role | Sunlight strikes the pigment molecules (chlorophyll and accessory pigments) on the surface of the thylakoid which excites electrons. |
What are the 3 steps of light-dependent reactions?
These reactions occur within specialised membrane discs within the chloroplast called thylakoids and involve three steps: Excitation of photosystems by light energy. Production of ATP via an electron transport chain. Reduction of NADP+ and the photolysis of water.
What is the example of light-dependent reaction?
Calvin cycle Light-dependent Cycle happens in the thylakoid membrane of the chloroplast. In this reaction, by using water, chlorophyll absorbs the energy from the sun and transforms it into chemical energy. Water (H2O) is split and oxygen (O2) comes out as a by-product.
What is another name for light-dependent reactions?
The light-dependent reactions; The light-independent reactions, or Calvin Cycle.
What are the 6 steps of photosynthesis?
Terms in this set (7)
- Step 1-Light Dependent. CO2 and H2O enter the leaf.
- Step 2- Light Dependent. Light hits the pigment in the membrane of a thylakoid, splitting the H2O into O2.
- Step 3- Light Dependent. The electrons move down to enzymes.
- Step 4-Light Dependent.
- Step 5-Light independent.
- Step 6-Light independent.
- calvin cycle.
What is light reaction of photosynthesis Class 11?
Light reaction of photosynthesis takes place in the thylakoids of the chloroplasts. During this process, the water molecule is splitted into oxygen, protons, and electrons. These protons and electrons are then transferred through the thylakoid membrane to produce energy storage molecules i.e., ATP and NADPH.
What are the 4 steps of light-dependent reactions?
Here are the basic steps:
- Light absorption in PSII. When light is absorbed by one of the many pigments in photosystem II, energy is passed inward from pigment to pigment until it reaches the reaction center.
- ATP synthesis.
- Light absorption in PSI.
- NADPH formation.
What is an example of a light-dependent reaction?
What is photosynthesis explain with a diagram?
Explanation: Photosynthesis is the cycle through which plants join daylight, water, and carbon dioxide to make oxygen and energy as sugar. Photosynthesis is the interaction through which green plants make their own sustenance from daylight. For life to exist on Earth, photosynthesis is fundamental.
What is light reaction Class 10th?
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.