Dialysis tubing lab quiz

What indicators were used in the activity & what substances pro they detect?

Benedict's is the indicator of glucose Iodine water is the indicator of starch

The plant cell won't explode because it has a ______

Cell wall

Osmosis

Diffusion of water across a selectively permeable membrane High-Low

Which solution moved out of the dialysis tubing? Ahow do you know this?

Glucose moved out of the dialysis tubing, because it is small enough

RBC hypotonic solution is called

Hemolysis

Molecules move from area of ______ concentration to areas of ______ concentration

High, Low

Plant cell isotonic solution is called

Limp or Flassid

Diffusion

Movement of molecules down their concentration gradient High- Low Does NOT require a membrane

RBC isotonic solution is called

Normal

Plant cell hypertonic solution is called

Plasmolysis

Isotonic

So gain & lose of water equal, but there is constant of movement of molecules across the cell so concentrations equal on both side of cell

Did the starch remain in the bag? If so why?

Starch remained inside, too large to pass through dialysis tubing

Describe the behavior of the dialysis tubing

The dialysis tubing acts similar to a semi permeable membrane

Which solution moved into the dialysis tubing? How do you know this?

The iodine water, which is why the color changed inside the bag

Plant cell hypotonic solution is called

Turgid pressure

Hypotonic

Water moves into cell, lower solute concentration outside cell then inside cell (swells)

Hypertonic

Water moves outside the cell, so higher solute concentrations outside (Shrivels)

RBC hypertonic solution is called

crenation