Proces
intracellular space
les
the model shows two types of proteins, channels and carriers, allowing the movement of molecules into the cell. as indicated
by the model, what question is best asked about the role of the proteins in this type of transport?
how can proteins be used in active transport?

i dont know this but ask your teacher for !

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

the answer is a) cell division.

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i think that it is c, d, and e, hope this