Chapter 3
Question 24-Relate plasma membranes structure to active and passive transport mechanisms. Differentiate between these transport processes relative energy source, substance transported, direction, and mechanism

Plasma membrane structure-This structure is slightly like the active and passive transport mechanisms. This structure doesn't move molecules through anything, it just lets them pass through if they are allowed. These two transport mechanisms move molecules through membranes, not let them in or keep them out.

Active trans mechanisms- The way that this structure transports molecules is almost the same way as facilitated diffusion works. They need carrying proteins that can combine in reverse and specifically with the transported substances. This structure uses the energy of ATP to move the solutes across the membrane. They mostly move solutes, and ions, that are more important.

Passive trans mechanisms- The two ways that cells transport molecules, are diffusion, and filtration. Diffusion is when particles move evenly through the space. They all have kinetic energy and are always moving. The substances that are being transported are some sugars, amino acids and ions. They move through every cell of the body if they are diffusion, and filtration is usually only across capillary walls.