Table of Contents
- 1 What is the output of light-dependent reactions?
- 2 What comes out of the light-dependent cycle?
- 3 What is the main purpose of the light dependent reaction?
- 4 What are the steps of light-dependent reactions?
- 5 What is the main purpose of the light-dependent reaction?
- 6 What raw materials are used in light-independent reactions?
- 7 Where does the energy from light dependent reactions go?
- 8 What happens in the light dependent phase of photosynthesis?
What is the output of light-dependent reactions?
Outputs of the light reactions are oxygen, which is released to the atmosphere, and ATP and NADPH, which go into the Calvin cycle.
What comes out of the light-dependent cycle?
The light-dependent reactions release oxygen as a byproduct as water is broken apart. In the Calvin cycle, which takes place in the stroma, the chemical energy derived from the light-dependent reactions drives both the capture of carbon in carbon dioxide molecules and the subsequent assembly of sugar molecules.
What are the outputs or products of the light-dependent reactions of photosynthesis?
Photosynthesis is usually divided into two sets of reactions, light dependent and light independent….
| INPUTS | OUTPUTS |
|---|---|
| Light Energy | ATP |
| Water (H2O) | NADPH |
| Oxygen Molecules (O2) |
What are the 3 products of the light-dependent reactions?
Glucose, ATP and O2
What is the main purpose of the light dependent reaction?
The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem.
What are the 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 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 the correct order of steps in the light-dependent reactions?
What is the main purpose of the light-dependent reaction?
The light-dependent reactions convert light energy into chemical energy. The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH.
What raw materials are used in light-independent reactions?
Answer: Raw materials are Carbon dioxide and water; light reaction happens in plants.
What are the main steps in the light-dependent reactions?
What are the end products of light reaction?
Difference between Light and Dark Reaction
| Light Reaction | Dark Reaction |
|---|---|
| The end products are ATP and NADPH. | Glucose is the end product. ATP and NADPH help in the formation of glucose. |
| The water molecules split into hydrogen and oxygen. | Glucose is produced. Co2 is utilized in the dark reaction. |
Where does the energy from light dependent reactions go?
ATP and NADPH move from the thylakoid into the stroma, where the energy they store is used to power the light-independent reactions. 3. The light-independent reactions (Calvin cycle) use stored chemical energy from the light-dependent reactions to “fix” CO 2 and create a product that can be converted into glucose.
What happens in the light dependent phase of photosynthesis?
Photosynthesis occurs in two phases: 1) in the presence of light, called light-dependent reaction, and 2) in the absence of light, called light-independent reaction or dark reaction, also known as the Calvin cycle. The light energy is trapped by a pigment in the chloroplast and converted into chemical energy.
How are light dependent reactions related to Calvin cycle reactions?
The two reactions use carrier molecules to transport the energy from one to the other. The carriers that move energy from the light-dependent reactions to the Calvin cycle reactions can be thought of as “full” because they bring energy.
Which is the standard form of the light dependent reaction?
In a process called non-cyclic photophosphorylation (the “standard” form of the light-dependent reactions), electrons are removed from water and passed through PSII and PSI before ending up in NADPH. This process requires light to be absorbed twice, once in each photosystem, and it makes ATP .