What would happen if the fatty acids in a cell membrane were polar molecules?
A. The cell would need to use facilitated diffusion.
B. The cell would block water from entering,
C. The cell would not be able to use passive transport.
D. The cell would dissolve in water.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Drag the tiles to the correct boxes to complete the pairs. not all tiles will be used. match each type of organism to a characteristic that describes it.