Cell Transport and Plasma Membrane

In which direction will these molecules diffuse?

• from right to left

• from left to right

• they will not move at all

• they will move in both directions equally

Which way would the purple molecules move through the semi permeable membrane?

• From side A to the side B.

• From side B to the side A.

• The purple molecules would not move.

Cells use energy to move materials across a membrane (low to high concentration).

• Active transport

• Passive transport

• Diffusion

• Osmosis

___________ form the two layers of the cell membrane. 

• Carbohydrates 
• Proteins 
• Phospholipids 
• Cholesterol

Osmosis is the movement of... 

• salt 

• sugar 

• water 

• none of these 

How are particles moved or transported in the cell?

• with mitochondria

• through endoplasmic reticulum

• by the nucleus

• with vesicles

Why does movement of molecules occur in the 3 types of solutions shown?

• Each solution is trying to reach equilibrium.

• Each solution has more than one solute

• Each solution has too much solute

• None of the above

Which of the following is an example of active transport?

• Facilitated diffusion

• Sodium-potassium pump

• Endocytosis

• Exocytosis

What type of solution is this cell in?

• Isotonic

• Hypertonic

• Hypotonic

• diffused

What will happen to the size and shape of the cell in this example?

Note: The gray diamonds represent molecules of solute.

• the cell will swell & get bigger

• the cell will shrink & get wrinkly

• the cell will stay the same size