The plasma membrane needs lipids, which make a semi-permeable barrier between the cell and its environment. It also needs proteins, which are involved in cross-membrane transport and cell communication, and carbohydrates, which decorate both the proteins and lipids and help cells recognize each other. Hope this helps :)
Answer:
dog and kangaroo
Explanation:
this is the only logical answer ~\_(8-8)_/~
:)
Cancer cells multiply rapidly and normal cells don't.