Question

what is the main function of the cell membrane in a plant cell? to control which substances enter and leave the cell to contain the information that the cell uses for growth and activities to break down sugar and release energy that the cell can use to give the cell its fixed shape

Explanation:

The cell membrane is a selectively permeable barrier. It regulates the movement of substances (such as ions, nutrients, and waste) in and out of the cell. This function is crucial for maintaining the cell's internal environment, allowing it to take in necessary materials and expel harmful or unnecessary ones. The other options describe functions of the nucleus (to contain information for growth and activities), mitochondria (to break down sugar and release energy), and cell wall (to give the cell its fixed shape) respectively.

Answer:

to control which substances enter and leave the cell