Question

what is the role of integral proteins in the cell membrane?
to provide structural support
to store genetic information
to produce energy
to facilitate the movement of substances across the membrane
question 6 0.75 pts
which molecule in the cell membrane acts as a barrier to water - soluble substances?
carbohydrates
nucleic acids
proteins
lipids

Explanation:

Integral proteins span the cell - membrane and have functions like transporting substances across the membrane. Lipids in the cell - membrane have hydrophobic tails that form a barrier to water - soluble substances.

Answer:

For the first question: To facilitate the movement of substances across the membrane
For the second question: Lipids