Thursday
April 17, 2014

Homework Help: bio

Posted by Monique on Wednesday, March 21, 2012 at 10:37pm.

The cell membrane is a highly selective barrier that controls the movement of substances in and out of the cell. In fact, polar molecules are unable to go across unless


A. they are enclosed in water-filled vesicles.

B. they pass through channels in the cell membrane.

C. they are broken down into smaller pieces.

D. they react with other substances to become nonpolar.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Biology - The cell membrane is a highly selective barrier that controls the ...
another bio q - what forms from a piece of membrane breaking loose from cell ...
Biology - All cell are surrounded by membranes. The main role of the cell ...
Biology - All cell are surrounded by membranes. The main role of the cell ...
bio - cell's digestive enzymes are enclosed in a membrane-bound organelle how ...
Physics 112 - The inner and outer surfaces of a cell membrane carry a negative ...
physics 2 - The inner and outer surface of a cell membrane carry a negative and ...
BIO - All cells have these two characteristics: a contain DNA in the nucleus and...
Microbiology - Which of the following statements about the outer membrane of ...
biology - The function of neurons is to a. maintain a difference in electrical ...

Search
Members