Which of the following statements is true? a)during active transport, a material may be moved from an area of low concentration to an area of high concentration. b) during passive transport, energy is used to move material against a concentration gradient. c)during active transport, water is pumped across a membrane to equalize the concentration of salts on both sides. d)during passive transport, osmosis allows salts to move from one side of the membrane to the other to equalize concentrations on both sides.
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. __C__ I am useful for a fast source of energy. 2. __P__ I have involvement in the immune system (ex: antibodies). 3. __L__ I am helpful for long term energy storage. 4. __P__ I have a large role in muscle development. 8. ___P_ Enzymes, which can speed up reactions, belong in my category. 11. __N__ My category includes genetic material. 9. __L__ I am important for insulation. 5. ___C_ If athletes "pasta load," they consume a lot of me. 7. __P__ I make up cell membranes. 6. __N__ A mutation in DNA would initially start with me. 10. ___C_ I contain elements C, H, and O and have a ring-like structure. 12. __L__ I can contain long fatty acid chains.