Most receptor proteins are embedded in the l<span>ipid bilayer of the cell membrane.</span>
Answer:
Answer: I think it's D
Explanation: A mineral is a chemical substance made up of one or more chemicals having a definite crystal structure. Rocks do not have a definite chemical composition whereas minerals do. Sometimes a rock may contain organic remains in it.
Explanation:
A. is the correct answer bc a mutation changes the DNA.