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OsmosisDiffusionActive 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 concentration of 0.9%. If they were placed in pure what, what net movement of water will occur due to osmosis? A 400

Water moves into the cell A 400

A 500

Into the cell through the channel protein. Into the cell through the channel protein. A 500

The diffusion of water into or out of the cell is called ___. B 100

osmosis B 100

A cell will swell if it is placed in a(n)_______ solution B 200

hypotonic B 200

Proteins that act like selective passageways in the cell membrane are known as ____ B 300

Channel proteins B 300

Sugar molecules pass through the cell membrane via B 400

Facilitated diffusion B 400

B 500 What kind of substances can move through the cell membrane unaided?

Small, nonpolar molecules B 500

Unlike passive transport, active transport requires____. C 100

Energy C 100

A scientist places a cell in a solution, and over time the cell gains mass and swells. What is most likely the explanation for the cell’s gain in mass? C 200

The solution is hypotonic to the cell. C 200

List two forms of active transport. C 300

1.) Endocytosis (phagocytosis, carrier mediated endocytosis, pinocytosis) 2.) Exocytosis 3.) Sodium-potassium pump C 300

DAILY DOUBLE C 400 DAILY DOUBLE Place A Wager

The saline solution in an IV bag is a ______ solution to your blood cells. This way, the net movement of water into or out of the blood cells is zero and they do not shrink or swell. C 400

Isotonic

Ridding the cells of materials by discharging the materials in vesicles is called _____. C 500

Exocytosis C 500

Molecules that are too large to be moved through the membrane can be transported into the cell by ____. D 100

Endocytosis D 100

What is the double layer that makes up a cell membrane called? D 200

Phospholipid bilayer D 200

What is the difference in concentration of a substance across a region? D 300

Concentration gradient D 300

The cell membrane is ______ because it allows for the passage of some substances but not others. D 400

Semi-permeable

A cell shrinks when it is in a(n) _____ Solution. D 500

hypertonic D 500

___ is a form of passive transport that involves membrane channel proteins that aid in the movement of substances down their concentration gradient. E 100

Facilitated diffusion E 100

Plant cells are healthiest in a ____ solution E 200

hypotonic E 200

Paramecia live in a hypotonic environment. How do they overcome being constantly 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 molecules outside the sell membrane is called: F 100

exocytosis F 100

The process of a cell importing a material that does not have to be recognized is called? F 200

Phagocytosis F 200

Why is osmoregulation important to a cell? F 300

To maintain the water balance in 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/minute Very high2 High8 Medium15 Low22 Very low30

F 500 As salt concentration increases, there is less water flooding the cell due to osmosis (the solution is hypotonic to the cell, but becomes less so as the concentration of salt increases), therefore the contractile vacuole 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 will be in side 1 at the end of the experiment

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