{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 6- photosynthesis 2

At the reaction center is a primary electron acceptor

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: r is a primary electron acceptor which removes an excited electron from the reaction center chlorophyll a. - – This starts the light reactions. • Each photosystem - reaction-center chlorophyll and primary electron acceptor surrounded by an antenna complex - functions in the chloroplast as a light-harvesting unit. - electron acceptor grabs high energy electron and moves it to electron transport chain 6 • Photosystem I has a reaction center chlorophyll, the P700 center, that has an absorption peak at 700nm. • Photosystem II has a reaction center with a peak at 680nm. – The differences between these reaction centers (and their absorption spectra) lie not in the chlorophyll molecules, but in the proteins associated with each reaction center. • These two photosystems work together to use light energy to generate ATP and NADPH. - non cyclic pathway is predominant one • light reactions, there are two possible routes for electron flow: cyclic and noncyclic. • Noncyclic electron flow, the predominant route, produces both ATP and NADPH. 1. Whe...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online