Which structure is primarily responsible for directing all processes and reactions in a plant cell

A nucleus is primarily responsible for directing all processes and reactions in a plant cell. The function of the nucleus in the plant cell is to store the plant's DNA and control the activity of the cell through protein synthesis. The nucleus is enclosed by the nuclear membrane, which has pores for the passage of RNA and proteins. 

Lipid because of the high percentage of carbon to carbon bonds, which store more energy than other bonds.

The answer is c the potato slice shriveled because water moved out of the slice into the salt solution