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.
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!