Which of the following are functions of lipids? a. forming the exoskeleton of insects
b. forming waxy leg coverings
c. forming bones and cartilage
d. strong energy in fat cells
e. forming cell membranes
f. carrying genetic information

Me.henley said, “in the rat race we call life, only the strong will survive.” he may have been referring to

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.

Based on their relative positions in the periodic table, which two elements would have the same number of valence electrons?