Which of the following macromolecules is matched with its correct role in the cell? Choose ONE

A. Carbohydrates — key component of the cell membrane (lipid bilayer)

B. Lipid — chemical messenger

C. Lipid — storage of short-term energy

D. Nucleic acid — chemical messenger

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament

24. how are vaccines used to keep people healthy?