Up Learn – A Level Biology (AQA) – Photosynthesis
Introduction to Photosynthesis
Photosynthesis starts with the light-dependent reaction. This results in two important products which are essential for the light-independent reaction.
More videos on Photosynthesis:
Introduction to Photosynthesis
The Light Dependent Reaction: Photophosphorylation and Chemiosmosis
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Photosynthesis
2. Overview of the Stages of Photosynthesis
3. Photophosphorylation and Chemiosmosis
4. How Is the Proton Gradient Maintained in the Thylakoid?
5. Oxidation-Reduction Reactions Recap
6. Photoionisation
7. The Electron Transfer Chain in Thylakoids
8. Reduced NADP
9. Photolysis
10. The Entirety of the Light-dependent Reaction
11. A Closer Look at NADP
12. How Chloroplasts are Adapted for Photosynthesis
2. Overview of the Light-independent Reaction
3. Forming Glycerate 3-Phosphate
4. Forming Triose Phosphate – Part 1
5. Forming Triose Phosphate – Part 2
6. Forming Organic Substances
7. Photosynthesis Overview
8. How Light Limits the Rate of Photosynthesis
9. How Carbon Dioxide Limits the Rate of Photosynthesis
10. How Temperature Limits the Rate of Photosynthesis
We’ve seen that photosynthesis takes place in a plant’s leaves.
Specifically, photosynthesis takes place in the…
Photosynthesis takes place in the chloroplasts.
Now, there are two stages of photosynthesis.
The first stage is dependent on light, so it’s appropriately called the light-dependent reaction.
While the second stage is called the light-independent reaction.
This stage doesn’t use light, but it is still somewhat dependent on light…
Since it relies on the light-dependent stage.
Now, the light-independent reaction produces molecules that are used to make food for the plant, such as glucose.
But, in order for the light-independent reaction to take place, it requires molecules produced in the light-dependent reaction
Specifically, the light-independent reaction requires two molecules produced in the light-dependent reaction
In the following videos, we’ll look at what happens during the light-dependent reaction…
And we’ll discover what these two important molecules are!
To sum up, the first stage in photosynthesis is the…
The first stage in photosynthesis is the light-dependent reaction…
And the second stage in photosynthesis is the light-independent reaction.
The light-independent reaction produces molecules that are used to make food for the plant, such as glucose…
And, for the light-independent reaction to take place, two products of the light-dependent reaction are required!