which biomolecule is fundamental to the structure and function of biological membranes, such as cell membranes, and is also used as insulation? a. proteins b. lipids c. carbohydrates d. nucleic acids

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

Mention true or false : a) cholera is marked by acute diarrhea and no urination. b)mosquitoes are the source of dysentery germs.

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls