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So the phospholipids are arranged in a double layer (a bilayer) to keep the cell separate from its environment. Lipids do not mix with water (recall that oil is a lipid), so the phospholipid bilayer of the cell membrane acts as a barrier, keeping water out of the cell, and keeping the cytoplasm inside the cell.
Answer:
The continents do not drift over the surface they are enabled in the plates and move with them
Explanation:
Answer:
D
Explanation:
The water molecule is polar because the oxygen atom is more electronegative than hydrogen causing the electrons from the hydrogens to gravitate closer to the oxygen atom. The molecule is like a magnet; the negative oxygen end will want to stick to the positive hydrogen end of another molecule. Hope this helps