The drawing below illustrates a small portion of the molecules that make up a cell membrane. The phospholipid molecules serve to A) prevent the passage of certain molecules into the cell
B) allow glucose molecules into the cell
C) line up amino acids for protein synthesis
D) help cells recognize each other

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates