How does the cell membrane in the diagram above help to maintain the health of this cell? A.
By breaking down old organelles and macromolecules

B.
By regulating the transport of materials in and out of the cell

C.
By manufacturing protein to provide energy for the cell

D.
By storing food as future energy for the cell

Acell in the human nervous system whose primary function is to form myelin and the blood-brain barrier, respond to injury, remove debris, and enhance learning and memory is called a(n) cell.

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f

Astudent completed a lab report. which correctly describes the difference between the “question” and “hypothesis” sections of her report? “question” states what she is asking, and “hypothesis” states the result of her experiment. “question” states what she is asking, and “hypothesis” states what she thinks the answer to that question is in “if . . then . . because” format. “question” describes what she is trying to find out, and "hypothesis" states the procedures and methods of data collection. “question” describes what she is trying to find out, and “hypothesis” states any additional information or prior knowledge about the question.