Show:
Hyper-
Hypo-
Iso-
ATP
Membrane
100
what is the end concentrations of diffusion?
The concentrations should be equal on both sides (equilibrium, or homeostasis)
100
the cell membrane is comprised of which organic molecules?
carbohydrates, protein, and lipids
100
facilitated roughly means what?
to help, facilitated diffusion 'helps' the bigger particles diffuse across the cellular membrane
100
which organic molecule marks the cell?
carbohydrates- on top of marker proteins denote what type of cell it is to the rest of the intracellular parts
100
the lab demoed yesterday with the dialysis tubing was trying to show what?
diffusion through a semi-permeable membrane
200
why did starch not go through the membrane?
starch is a polysaccharide, it is too large
200
solution with lots of solute, very little solvent
hypertonic solution
200
solute is considered what?
dissolved minerals, stuff, salt- things other than water
200
solvent is considered what?
the water % of the solution
200
if asking for diffusion do we look at solute % or solvent percentage?
solute, we want to know the % of stuff other than water
300
when asking about osmosis are we looking for solute or solvent %?
solvent, that is the water concentration
300
what is the difference between facilitated diffusion and diffusion?
facilitated diffusion is for larger particles
300
What is the mechanism in plant cells that keeps the cell from gaining enough water to burst?
the cell walls, not present in animal cells, keep the vacuole in check
300
What is the difference between an animal vacuole and a plant vacuole?
an animal vacuole is used as a transport mechanism- transporting things in and out of the cell whereas a plant vacuole is used for water storage
300
if placed in a hypertonic solution, the cell should: swell or shrink
the cell should shrink
400
why is drinking salt water dangerous?
salt water is relatively hypertonic to human cells, this sucks the water out of us x(
400
solution surrounding the cell has a higher concentration of water is called ______.
hypotonic solution as it has less stuff and more water
400
if the solute is too big to pass through the semi-permeable membrane, how does the cell reach equilibrium?
as the solute cannot move, the solvent can. Water will pass through the membrane to create equal % on both sides
400
when in equilibrium, do the particles stop moving?
the particles never stop moving, they are constantly trying to maintain equilibrium
400
did glucose pass through the semi-permeable membrane from yesterday's lab demo? why or why not?
yes, they are a monosacchrides which are small enough to pass through
500
what type of transport sends molecules from low to high on the concentration gradient?
active transport goes against the gradient sending molecules from low% to high%
500
two general types of active transport
endocytosis and exocytosis
500
ATP stands for adosinetriphosphate, what does this mean to us?
it means energy (write this down!) ATP will be used as a reference to energy on your test
500
if a student wants to make a 45% salt solution for 100mL, how many mL of water does she need? how many grams of salt?
45 grams of salt, 55 mL water
500
Why was vinegar used in the egg lab?
to dissolve the egg shell which protects it from breaking easily