Which macromolecules are often made of three fatty acid‘s bond to a glycerol molecule. a. proteins b. lipids c. carbohydrates d. nucleic asids

Answer . These two molecules form what is known as a triglyceride or a fat. Two common forms of triglycerides are saturated and un saturated fats.. so basically lipids

B. Lipids.

it's B. Lipids for apex

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation: