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Osmosis Diffusion Active transport

Passive transport

Endocytosis Grab Bag

List the forms of transport that do not require energy.

(3)

A 100

Diffusion

Osmosis

Facilitated diffusion

A 100

AS a result of diffusion, the concentration os substances will reach ____.

A 200

Equilibrium

A 200

What process is being

illustrated?

A 300

Diffusion

A 300

Red blood cells have a salt Red blood cells have a salt concentration of 0.9%. If they concentration of 0.9%. If they were placed in pure what, what were placed in pure what, what

net movement of water will occur net movement of water will occur due to osmosis?due to osmosis?

A 400

Water moves into the cell

A 400

A 500

Into the cell Into the cell through the through the

channel channel protein.protein.     A 500

The diffusion of water The diffusion of water into or out of the cell is into or out of the cell is

called ___. called ___.

B 100

osmosis

B 100

A cell will swell if it is A cell will swell if it is placed in a(n)_______ placed in a(n)_______

solutionsolution

B 200

hypotonic

B 200

Proteins that act like Proteins that act like selective passageways selective passageways in the cell membrane in the cell membrane are known as ____are known as ____

B 300

Channel proteins

B 300

Sugar molecules pass Sugar molecules pass through the cell membrane through the cell membrane

viavia

B 400

Facilitated diffusion

B 400

B 500

What kind of substances can What kind of substances can move through the cell membrane move through the cell membrane

unaided?unaided?

Small, nonpolar molecules

B 500

Unlike passive Unlike passive transport, active transport, active

transport requires____. transport requires____.

C 100

Energy

C 100

A scientist places a cell in A scientist places a cell in a solution, and over time a solution, and over time the cell gains mass and the cell gains mass and swells. What is most swells. What is most

likely the explanation for likely the explanation for the cellthe cell’’s gain in mass?s gain in mass?

C 200

The solution is The solution is hypotonic to the hypotonic to the

cell. cell.

C 200

List two forms of active List two forms of active transport.transport.

C 300

1.) Endocytosis 1.) Endocytosis (phagocytosis, carrier (phagocytosis, carrier mediated endocytosis, mediated endocytosis,

pinocytosis)pinocytosis)2.) Exocytosis2.) Exocytosis

3.) Sodium-potassium 3.) Sodium-potassium pumppump

C 300

DAILY DOUBLE

C 400

DAILY DOUBLE

Place A Wager

The saline solution in an IV The saline solution in an IV bag is a ______ solution to bag is a ______ solution to

your blood cells. This way, the your blood cells. This way, the net movement of water into or net movement of water into or out of the blood cells is zero out of the blood cells is zero

and they do not shrink or and they do not shrink or swell. swell.

C 400

C 400

Isotonic

Ridding the cells of materials Ridding the cells of materials by discharging the materials by discharging the materials in vesicles is called _____. in vesicles is called _____.

C 500

Exocytosis

C 500

Molecules that are too Molecules that are too large to be moved large to be moved

through the membrane through the membrane can be transported into can be transported into

the cell by ____. the cell by ____. D 100

Endocytosis

D 100

What is the double What is the double layer that makes up a layer that makes up a cell membrane called?cell membrane called?

D 200

Phospholipid bilayer

D 200

What is the difference What is the difference in concentration of a in concentration of a substance across a substance across a

region?region?

D 300

Concentration gradient

D 300

The cell membrane is ______ because it The cell membrane is ______ because it allows for the passage of some substances but allows for the passage of some substances but

not others. not others.

D 400

D 400

Semi-permeable

A cell shrinks when it is in a(n) A cell shrinks when it is in a(n) __________

Solution. Solution.

D 500

hypertonic

D 500

___ is a form of passive ___ is a form of passive transport that involves transport that involves

membrane channel membrane channel proteins that aid in the proteins that aid in the

movement of substances movement of substances down their concentration down their concentration

gradient. gradient.

E 100

Facilitated diffusion

E 100

Plant cells are Plant cells are healthiest in a ____ healthiest in a ____

solutionsolution

E 200

hypotonic

E 200

Paramecia live in a hypotonic Paramecia live in a hypotonic environment. How do they environment. How do they overcome being constantly overcome being constantly

flooded with water?flooded with water?

E 300

Contractile vacuole

E 300

What is occurring in the picture above?

E 400

Carrier mediated endocytosis

E 400

What process is occurring in the illustration?

E 500

Exocytosis

E 500

The discharging of The discharging of molecules outside the sell molecules outside the sell

membrane is called: membrane is called:

F 100

exocytosis

F 100

The process of a cell The process of a cell importing a material importing a material that does not have to that does not have to

be recognized is be recognized is called?called?

F 200

Phagocytosis

F 200

Why is osmoregulation Why is osmoregulation important to a cell?important to a cell?

F 300

To maintain the water balance in To maintain the water balance in the cell.the cell.

F 300

If something happened to a paramecium that caused its contractile vacuole to stop

contracting, one would expect it to burst due to overwhelming flooding

of water. Would this result occur more quickly if the paramecium was

in water with a high salt concentration or in water with a low

salt concentration?

F 400

Water with a low salt concentration

F 400

How can you explain the observed

relationship between salt concentration

and rate of contractile

vacuole contraction?

F 500

Salt Rate of contractile vacuole

contractions/minuteVery high 2

High 8Medium 15

Low 22Very low 30

F 500

As salt concentration increases, As salt concentration increases, there is less water flooding the there is less water flooding the

cell due to cell due to osmosisosmosis (the solution (the solution is is hypotonichypotonic to the cell, but to the cell, but

becomes less so as the becomes less so as the concentration of salt increases) , concentration of salt increases) , therefore the contractile vacuole therefore the contractile vacuole

does not need to contract as often. does not need to contract as often.

The Final Jeopardy Category is:

Diffusion

Please record your wager.

Click on screen to begin

A selectively permeable membrane separates the solutions in the arms of the U-tube shown

below. The membrane is permeable to the water and to

solute A but not to solute B. Forty grams of substance A and 20

grams of substance B have been added to the water on side 1 of the

U – tube. Twenty grams of substance A and forty grams of substance B have been added to

the water on side 2 of the U-tube.

Click on screen to continue

When the system reaches

equilibrium, how many grams of

substance A will be on solution on side 1 of the U-

tube?

Click on screen to continue

30 grams of solute A 30 grams of solute A will be in side 1 at the will be in side 1 at the end of the experimentend of the experiment

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