Which structure controls the movement of substances into and out of the cell?

The diagram illustrates the activity of vesicles during a cellular process.

What does it mean for a cell membrane to be selectively permable

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.