unit 1: biochemistry Flashcards
1
Q
what is endosymbiosis?
A
a theory which believes that all organelles were previously single prokaryotes, which were ‘eaten’ and utilized in the cell
2
Q
what are the functions of cell membrane proteins?
A
enzymatic activity, transport, cell-cell recognition and signal transduction
3
Q
what can pass through the cell membrane freely?
A
non-polar molecules, very small amounts of water and OH
4
Q
what cannot pass through the cell membrane freely?
A
large molecules, ions, macromolecules, polar molecules
