Cells and Transport Pt. II

review notes, labs, handouts

What are the two types of transport?

passive transport and active transport

passive transport

molecules move down the concentration gradient, requires no energy

What are the three types of passive transport?

simple diffusion, facilitated diffusion, osmosis

simple diffusion

movement of small, non-polar molecules

facilitated diffusion

movement of other materials across membrane with the help of proteins (channel, gated/carrier)

osmosis

movement of water from a high concentration to low concentration; can move through phospholipid bilayer slowly but w/ use of aquaporins will move faster

osmoregulation

tonicity

hypertonic

hypotonic

isotonic

factors that affect rate of passive transport

active transport

types of active transport

Na⁺/K⁺ pump, vesicular transport

sodium potassium pump (Na⁺/K⁺)

vesicular transport

types of vesicular transport

endocytosis, exocytosis

types of endocytosis

phagocytosis, pinocytosis, receptor-mediated