Lab 6

Question 1

Consist of two fatty acid chains linked to a charged phosphate group and a glycerol molecule

Answer 1

Phospholipids

Question 2

Substance doing the dissolving

Answer 2

Solvent

Question 3

Substance being dissolved

Answer 3

Solute

Question 4

Percent change in weight equation

Answer 4

Final weight - initial weight
————————————— x 100
Initial weight

Question 5

When the cytoplasm and plasma membrane shrinks and pulls away from the cell wall

Answer 5

Plasmolysis

Question 6

How do the dialysis bags compare to a cell membrane?

Answer 6

dialysis tubing has small pores that allow small molecules to pass through but blocks larger molecules

Question 7

Small, non-polar molecules move through the dialysis tubing

Answer 7

water, iodine, NaOH

Question 8

Large and polar molecules will not move through the dialysis tubing

Answer 8

phenolphthalein and starch

Question 9

How does concentration gradient affect the movement of water in the osmosis experiment?

Answer 9

the greater the concentration gradient the faster the diffusion rate