A&P exam 1 (part 4)

net movement of molecules from high concentration to low until equilibrium is recorded

t or f, molecules do not like to be in small groups
True False

does diffusion always take place in one direction?

this type of diffusion has its own type of terminology

molecules diffuse according too?

differentially permeable membrane occurs with what type of diffusion?

a cell membrane has a ?

if a membrane is permeable, it can ?

if a membrane is impermeable is can?

diffusion of H2O across a differentially permeable membrane?

during osmosis water diffuses from?

with osmosis you are interested in the ?

a 5% glucose solution = 95% water solution, which has the greater concentration of water?

10% glucose solution = 90% water solution, which has the lower concentration of water?

a problem that occurs with osmosis is when you are ?

tonicity only works for?

relative concentrations

the solution on the inside of a cell is always gonna eb?

the solution in tonicity that is outside of the cell could be?

what is used to drive molecules across a cell membrane

movement of molecules only occurs if being helped, can go in either direction

can go against concentration gradient, but it only used when they absolutely have to

osmosis is the ?

what acts as channels to facilitate movement from low to high concentrations

what uses proteins as pumps, supplied with energy to move molecules across the concentration gradient

type of active transport?

moving larger quantities of material across membranes using vacuoles

bulk transport?

ex of bulk transport?

brings larger materials into the cell

bringing solid material in during endocytosis

bringing liquid material in during endocytosis

3 parts of endocytosis?

membrane bounded space?

bulk transport requires?

[X1]=[X2]

no net movement of water?

[X1]>[X2]

more concentrated, concentrated solutions

watery solutions

water always diffuses from?

to determine what will happen to cell, it involes the ____ and you are answering for the ___

eject to exterior, isn't differentiated by solid/liquid

lets out various mixtures of compounds made in other organelles, ex, secretions, digestion

what is bulk transport used for?

incorporated into cell as a coated vesicle?

differentiate by size, measure of EPD difference

the greater the ____, the greater the difference

have charge associated with it

distribution of ions inside the cell must be different from?

electrical potential difference includes?

voltmeter compares 2 parts based on placement of electrons

what does the voltmeter measure?

magnitude of difference?

the magnitude of difference is the charge?

characteristic of all living cells, doesn't matter what type of cell

the resting membrane potential has a ?

typical voltage in cells?

caused by distribution of ions inside cell vs outside

1mv=

with resting membrane potential, the charge is?

with RMP all pairs or points (in or out) are?

phrase to remember for RMP?

Vm is a characteristic of?

cell membranes are?

depolarize?

hyperpolarize?

4 ions the affect RMP?

intracellular/extracellular ion # for K+

intracellular/extracellular ion # for Na+

intracellular/extracellular ion # for Cl-

intracellular/extracellular ion # for charged proteins?

in the distribution of ions, the net charge?

force acting on ions trying to drive them from side of high concentrations to low

if gradients were uneven, it would?

used to pump sodium out as it is leaked to the inside

cell membrane is _____ to protein

protein can not pass through ? meaning?

with the sodium potassium pump what happens?

how much of energy cell burns is used to maintain RMP of sodium and the sodium pump?

the sodium potassium pump runs?

the cell membrane is _____ permeable to sodium

what does slightly permeable mean?

sodium is pumped out as it comes in to maintain?

concentration of potassium is?

cells only use active transport when?

the size of charge is important in?