Photosynthesis Essay

Photosynthesis occurs in 3 main stages: energy is captured from sunlight, thenits converted into chemical energy and stored in organic molecules.

Photosystems are light harvesting units of the thylakoid membrane. Eachphotosystem has four hundred pigment molecules. A photon hits the pigmentmolecules and travels through each molecule and then reaches the reaction centeras shown in figure 1-1. The thylakoid membrane has two photosystems, photosystem1 & 2. The reaction center in photosystem 1 is called P700 because thispigment is best at absorbing 700 mm light. Photosystem 2s reaction center iscalled P680 because it is best at absorbing 680 mm light.

We will write a custom sample essay on
Photosynthesis
specifically for you for only $13.9/page
Order now

Calvin Cycle TheCalvin cycle begins by incorporating Co2 from the air into molecules in thechloroplast. This action is called carbon fixation. The next thing it does isadd electrons to the fixed carbon to make it carbohydrate. The power of theCalvin cycle comes from NADPH. The Calvin cycle also needs energy from ATP,which is generated by light reactions. This is reaction is called darkreactions because it does not directly need light to work.

So basically allthe Calvin cycle does is make sugar with out light but with help from ATP &NADPH.

Biology

Haven’t Found A Paper?

Let us create the best one for you! What is your topic?

By clicking "SEND", you agree to our terms of service and privacy policy. We'll occasionally send you account related and promo emails.

Eric from Graduateway Hi there, would you like to get an essay? What is your topic? Let me help you

logo

Haven't found the Essay You Want?

Get your custom essay sample

For Only $13.90/page