a. cell shape- It is cell shape because not only are the other 3 nonsensical, the cytoskeleton is for the framework and movement of a cell.
An independent variable is a controlled variable while the dependent is the result of the independent variable.
Ex.
If I increase the height of the ramp (i.v.), then the car will go faster (d.v.) because I raised the ramp.
On a graph the indecent variable would be in the y axis and the dependent on the x axis
If this is a true or false question i would say true
Explanation:
Carrier proteins are proteins that carry substances from one side of a biological membrane to the other.