Layer around every cell that separates it from the outside environment; it controls what can enter and leave the cell. → cholesterol true false

Which of the following may one conclude from a map that shows the average ph value of rainfall in the u.s.? acid rain is a more serious problem on the east coast. acid rain falls equivalently across the continental u.s. there are more factories on the west coast. the midwest has fewer forests than the rest of the u.s.

Which organelle stores most of a cell’s dna?

Which is essential for finding the biomass of spinach