The protein in the cell membrane
a)remain in fixed positions
b)allow small molecules that can dissolve in liquid to pass into the cell
c)transport certain molecules into or out of the cell
d)prevent osmosis from taking place

What statements describe a host organism?

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?