Which molecule is a source of energy, a store of energy in the body, and can mix with water? a. lipid b. chlorophyll c. nucleic acid d. carbohydrate

Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.