13. Explain which is more useful when comparing rocks on the moon, mass or weight? Why?

the mass of an object is measured in kg and is defined as the amount of matter in an object. mass is determined by comparing an object to know masses on a balance. the weight of an object on the earth is defined as the force acting on the object by the earth's gravity.

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.

c is the answer. hope this