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Lecture 6
Photosynthesis Light Dependent Reactions
Question | Answer |
---|---|
photosynthetic pigments are located on the thylakoid membrane are organized into clusters with proteins called.... | photosystems |
proteins + 200-300 pigment molecules = | photosystem |
each photosystem is located on the membrane next to an ____ ("functional partners") | ETC- electron transfer chain |
specific kinds of enzymes, co-enzymes or other proteins that are organized to accept and give up electrons, one after the other at a cell membrane between two compartments is called a... | Electron Transfer Chain |
the electrons are at a ____ energy level when they enter the ETC than when they leave; "lose/gain" energy along the way and make____ | higher, lose, ATP |
in light ____ reactions photosynthetic pigments absorb photons of appropriate wavelength | dependent |
in light dependent reactions electrons in the pigment are boosted to a higher energy level, then return to their ground state, releasing energy which is passed to a chlorophyll a molecule in the "____" | reaction center |
the cyclic pathway of ATP formation uses... | PS 1 (Photosystem 1) |
as photosynthetic organisms evolved, cyclic flow did not provide enough... | energy |
____ evolved, work in tandem with PS1, provides enough energy to split water to get electrons... | type II photosystems |
non-cyclic electron flow uses... | PS II (Photosystem 2) |