Table of Contents
- 1 Which is true about light-dependent reactions?
- 2 What is the main function of the light reactions of photosynthesis?
- 3 What is the photosynthesis reaction?
- 4 What is true for photosynthesis?
- 5 What are the two reactions of photosynthesis?
- 6 What are the steps in light reactions?
- 7 What are the reactants of light dependent photosynthesis?
Which is true about light-dependent reactions?
Correct answer: The light dependent reaction converts solar energy to chemical energy, using the photosystem to capture light energy, and ultimately produce ATP and NADPH. Pigment molecules in the photosystem absorb photons of light, which then reach the chlorophyll, exciting electrons in the chlorophyll.
What is the main function of the light reactions of photosynthesis?
The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.
Which is the best description of the light reaction of photosynthesis?
34 Cards in this Set
| What was the goal behind the creation of golden rice? | To develop rice that contained vitamin A |
|---|---|
| Which is the best description of the light reaction of photosynthesis? | Chlorophyll absorbs solar energy and shoots off an electron, which is transferred through a series of compounds |
Why is photosynthesis a light dependent reaction?
Explanation: Light reactions of photosynthesis are light dependent reactions. They are light dependent because for the process to start, a light ray should impinge on the chlorophyll and only then the reactions of photosynthesis begin.
What is the photosynthesis reaction?
Photosynthesis reactions are naturally occurring processes that take place in all green plants and most algae. During this process the plant uses light energy, carbon dioxide, and water to make food and then releases oxygen which all living organisms require to the atmosphere.
What is true for photosynthesis?
Complete answer: During true photosynthesis, the carbon dioxide is reduced and water is oxidized. The carbon dioxide is reduced to glucose and the water is oxidized to release oxygen in the presence of sunlight to synthesize nutrients such as carbohydrates in the form of glucose and release oxygen.
Where does light-dependent reaction happen?
Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.
What is the light dependent reaction of photosynthesis called?
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….
| Goal | Convert light energy into chemical energy |
|---|---|
| Location | Chloroplasts—thylakoids |
| Input | Sunlight, H2O, NADP+, ADP |
| Output | NADPH, ATP, O2 |
What are the two reactions of photosynthesis?
There are two main stages of photosynthesis: the light-dependent reactions and the Calvin cycle.
What are the steps in light reactions?
There are three phases to the light-independent reactions, collectively called the Calvin cycle : carbon fixation, reduction reactions, and ribulose 1,5-bisphosphate regeneration. Despite its name, this process occurs only when light is available.
Why does photosynthesis require light to occur?
The light dependent reaction of photosynthesis requires sunlight energy to occur. When the chlorophyll absorb the sun’s energy, electrons inside the plant gains energy as a result of absorbing photons of light from the sunlight. This energy obtained from the sun is then use to make ATP and NADPH molecules.
What happens during the light reaction stage?
light reaction. Any of the chemical reactions that take place during the first stage of photosynthesis and require the presence of light. During the light reactions, energy captured from light by chlorophyll and its accessory pigments drives the production of ATP, the source of energy that is later used to drive the production of carbohydrates.
What are the reactants of light dependent photosynthesis?
The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water.