Question

bio130 exam 3 - chapters 10 and 11 nervous syst... 12 multiple choice myelin is rich in ______ nucleic acids carbohydrates salts lipids

Explanation:

Myelin, the insulating layer around nerve fibers, is primarily composed of lipids (and some proteins). Nucleic acids are for genetic info, carbohydrates for energy/structure, salts are ions; none match myelin's main component as well as lipids.

Answer:

The option for "lipids" (assuming the last option is lipids, as the image shows options: nucleic acids, carbohydrates, salts, [last option likely lipids]). To clarify, myelin is a fatty substance (a type of lipid) that insulates nerve fibers. So the correct option is the one labeled "lipids" (the fourth option in the image, likely with the label "lipids").