membrane function pogil

type 1 ions

potassium (K+), sodium(Na-), calcium(Ca+), chloride(Cl-), all polar and small

type 2 molecules

glucose, polar and large

type 3 molecules

water and urea, polar and small

type 4 molecules

molecular O2 and CO2, nonpolar and small

oxygen and glucose

what are 2 substances that need to move into a cell to maintain homeostasis?

carbon dioxide and water

what are 2 substances that need to move out of a cell to maintain homeostasis?

phospholipid

ion

charged atom

sugar (glucose)

urea

carbon dioxide

ions

start outside the cell, can't go through the membrane well because of the charges

glucose

starts outside the cell, can't move fluidly in and out because the molecules are very large

urea molecules

start inside the cell, move semi-fluidly because they are polar and small

CO2

starts inside the cell, really fluid across the membrane because nonpolar and small

channel proteins

help large and polar molecules pass in and out of the cell

passive transport

the movement of substances across a cell membrane without the use of energy by the cell

active transport

the movement of materials through a cell membrane using energy (ATP)

facilitated diffusion

when the protein assists the molecules across the membrane along the concentration gradient, from high to low (passive transport)

simple diffusion

molecules can pass through membrane on their own (passive transport)

nitrogen gas

type 1 ion, can't cross the membrane alone

hydronium

type 1 ion, can't cross the membrane alone

sucrose

type 2 molecule, can't move fluidly through the membrane, but can move a little

bicarbonate

type 1 ion, can't pass on it's own

alanine

type 3, pass with help