Which vitamin is synthesized by microbes in the intestine and helps to maintain bone health? A. vitamin A B. vitamin D C. vitamin E D. vitamin K

Because of its structure the cell membrane is known as a phospholipid ? a.bilayer b.molecule c.fluid d.barrier

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?