Chapter 6

Question 1

Simple diffusion

Answer 1

Molecules pass through the phospholipid bilayer and solutes permeate the membrane

Question 2

Osmosis

Answer 2

Diffusion of water through a selective membrane

Question 3

Potential osmotic pressure

Answer 3

The maximum pressure that could develop in a solution when its separated from pure water

Question 4

Actual osmotic pressure

Answer 4

Pressure that has already developed in a solution

Question 5

Isotonic

Answer 5

A fluid with the same potential osmotic pressure as cytosol

Question 6

Hypertonic

Answer 6

A fluid with higher concentration of solutes than in a cell

Question 7

Passive transport

Answer 7

Move substances down their concentration gradients by gates channels that are open, closed, or inactive that selectively choose membranes

Question 8

Active transport

Answer 8

-transport by pumps and require metabolic energy by the cell
-allows substances to enter or leave the cell without moving through the plasma membrane
(Opposite of Diffusion)

Question 9

Endocytosis

Answer 9

Plasma membrane “traps” extracellular material and brings it into the cell

Question 10

Exocytosis

Answer 10

Molecules can leave the cell

- enclosed in membrane vesicles and pulled out by the cytoskeleton

Question 11

Enzymes

Answer 11

• reduce the activation needed for a reaction

- regulate cell metabolism

Question 12

3 catabolisms

Answer 12

Glycolysis
Citric Acid Cycle
Electron Transport System (ETS)