Brownian Movement, Diffusion and Osmosis

.85%

An isotonic environment outside a cell has _______ salt, the same as the inside of the cell.

Iodine

Chemical added to the water in the beaker outside of the dialysis tubing is ____________.

Brownian Movement

Defined as the random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules on the fluid or gas surrounding the particles. Driving force behind other types of molecular motion. (Diffusion, etc.)

The carmine particles are moving slowly, southeast on the screen. They look like clouds moving.

Describe the movement of the carmine particles as seen on high power.

The iodine solution did diffuse into the dialysis bag, I know because the contents of the bag turned blue.

Did the iodine solution diffuse into the dialysis bag? How do you know?

1 Hour

How long will you have to wait?

2, 1 Hour

How many drops of each? How long do you have to wait?

More, Outside, Shrink

If a cell is put into a solution that is hypertonic, there's _______ salt outside the cell than there is inside the cell. Water will then travel through the cell membrane to the ___________, and the cell will _________.

True

If a patient were given an intravenous drip of 10% salt solution, the cells in the blood would shrivel up due to loss of water into the plasma of the blood.

I think the heat would speed up the rate of movement of the Sudan IV particles, as heat does this to particles. They will not be tightly packed together, like they would in the cold.

If left under a heat lamp for awhile, do you think it would have an effect on the rate of movement of the Sudan IV particles?

Hot-faster-cold

If methylene blue is dripped into ___________ water, it diffuses _______________ than if dripped into ______________ water.

Hypotonic

If there's less salt on the outside of the cell than in the inside of the cell, the liquid on the outside of the cell is called a _____________ solution.

Hypertonic

If there's more salt on the outside than on the inside of the cell, the liquid on the outside of the cell is called a _______________ solution.

High,Low

In simple diffusion, solute molecules travel from an area of __________ concentration to an area of ______________ concentration.

In the hot water, diffusion occurred more quickly. Diffusion occurred more quickly because particles move faster in heat.

In which flask did diffusion occur more quickly? Explain why.

Ignore Some of the Above Answers

Just read over the procedures

False

Limp celery can be made rigid and crisp by placing into fresh water. This is because the water is hypertonic to the cells of the celery causing water to move out of the cells.

Less, Inside, Expand

On the other hand, if a cell is put into a solution that is hypotonic, there is _______ salt outside of the cell than there is inside the cell. Water will then travel through the cell membrane to the __________ and the cell will _________.

Mass/Less

Potassium permanganate solution moved faster through the agar than methylene blue because its ________ was ____________.

Semi Permeable

Selective, or ____________________ membranes allow only certain molecules to pass easily.

SIze, Pores

The ________ of a molecule determines whether it can pass through the _________ of the membrane.

Potassium Permanganate

The chemical you add to plate #1 is

Clear

The liquid in the beaker, outside the bag, should be __________ at the conclusion of the experiment.

Amber

The liquid in the beaker, outside the bag, would be ____________ at the beginning of the experiment.

Active Transport

The reason that solid dye particles can be seen vibrating in water when viewed at high power with a light microscope is because (of)

Starch, Glucose

The two solutions added inside of the dialysis tubing at the beginning of the exercise are, _________ and ____________.

Glucose was found in both places, as the benedict's reagent test proved. When placing the beaker water inside the test tube and performing the benedict's test, the tube turned orange, proving a positive reaction. The glucose was already put into the bag from the start, also, so I know it was in there.

Was glucose found inside the dialysis bag, outside it, or in both places? Explain your observations regarding glucose.

Starch was found inside the bag, not out. The iodine turned blue in the bag but not out, therefore I knew it was inside the bag. Starch is too big to pass through the membrane.

Was starch found inside the dialysis bag, outside it, or in both places? Explain.

Methylene Blue

What you add to plate #2 is

True

When you stay in the shower too long, your fingers and toes get ridges because the water is hypertonic to the liquid inside your cells and this causes the water to move into your cells, making them get plump.

10% Salt Water

Which potato is in a hypertonic solution?

10% Salt Water

Which potato should be very rigid and crisp?