Duplicate of Cell 2 (Osmosis, Diffusion, etc..)

Diffusion occurs because

• molecules move and collide with one another
• the concentration of a solution is always the same all over
• molecules never move once equilibrium is met
• all of the above

An animal cell that is surrounded by freshwater will burst because osmotic pressure causes

• water to move into the cell
• water to move out of the cell
• solutes to move into the cells
• solutes to move out of the cell

Diffusion is the movement of particles from an area of

• of low concentration to an area of high concentration
• of high concentration to an area of low concentration
• an area of equilibrium to an area of high concentration
• all of the above

The diffusion of water across a selectively permeable membrane is called

• Hypotonic
• Facilitated diffusion
• Osmosis
• Active transport

At what point in the process of diffusion is equilibrium reached?

• when the movement of the molecules stop being random
• when the molecules are mixed and stop moving
• when the rate of change in a solution slows by one half
• when there is a continuous movement but no over all change

What is a major difference between facilitated diffusion and active transport

• active transport uses proteins in the process
• active transport moves substances from low to high conc.
• facilitated diffusion requires large amounts of energy
• active transport doesn't require energy

A plant cell is placed in a hypotonic solution. What will happen to the plant cell?

• it will swell
• it will shrink
• it will stay the same
• all of the above

Cells are put in a solution where the concentration is higher outside the cell. The cell will?

• under go cytolysis
• the will burst
• under go dynamic equilibrium
• under go plasmolysis

Which of the following is an example of passive transport

• endocytosis
• exocytosis
• facilitated diffusion
• pinocytosis

What happens to the concentrations of solutions as a result of diffusion taking place?

• The concentration remains greater inside a membrane
• Conc. eventually becomes balanced on both side of a membrane
• Concentration remains greater on the outside of the membrane
• Conc. becomes imbalanced on both sides of the membrane