11. There is no evidence for active transport of tropomyosin isoforms to specific locations. 12. Secondary active transport involves the use of an electrochemical gradient. 13. Ascorbic acid is absorbed in the body by both active transport and simple diffusion. 14. The protein ZIP1 is responsible for the active transport of zinc into prostate cells. 15. "Active Transport "-This means that the activity you undertake instead of driving a car. 16. These monomers are then absorbed into the mycelium by facilitated diffusion and active transport . 17. Water, as well as salts, can also be moved through the skin by active transport . 18. Several models for possible active transport through plasmodesmata exist. 19. The proteins may assist in the movement of substances by facilitated diffusion or active transport . 20. Diffusion, osmosis, and active transport and mass flow are all different ways transport can occur.
