Homework Help: biology

Posted by Monique on Wednesday, March 21, 2012 at 10:19pm.

Organisms must be able to adapt to a changing external and internal environment. An organism's ability to maintain a stable internal environment is known as homeostasis. How does a cell's membrane help an organism maintain homeostasis?
A. Cell membranes use a large portion of the cell's energy supply.

B. Cell membranes directly control the temperature of the cell.

C. Cell membranes control the substances that enter or leave cells.

D. Cell membranes protect the cell organelles from large doses of radiation

biology - Margarita, Thursday, March 22, 2012 at 10:07am
a
biology - Hannah, Monday, May 13, 2013 at 8:41am
C.

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