After light hits photosystem i, its energy is used to produce what molecule?

Which best describes the scientific process

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f оооо