energy flow and food webs Flashcards
1
Q
what is cell transport
A
movement of material across the membrane
2
Q
cell membrane
A
- made of phospholipids
- selectively permeable
3
Q
what does selectively permeable mean
A
some things can/cant go through
3
Q
what is polarity
A
unequal distribution of charge
4
Q
what can make it through the cell membrane
A
- small, not charged, not polar
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