Diffusion, Osmosis and Homeostasis

Movement across the cell membrane that does not require energy from the cell is called

• active transport

• passive transport

• mass transport

It is a type of passive transport which involves the movement of substances from a high concentration area to a low concentration area.

• effusion

• diffusion

• concentration gradient

Diffusion is the movement of a substance from an area of low concentration to an area of higher concentration.

• True

• False

The main difference between passive transport and active transport is ...

• passive transport requires energy

• active transport moves substances "down" their concentration gradient

• active transport requires energy

• passive transport moves substances "up" their concentration gradient

The maintenance of an organism’s internal environment is called:

• compensating
• homeostasis
• balancing
• routine

Osmosis is strictly about ....

• the movement of solutes

• the movement of solutes across a membrane

• the movement of gases

• the movement of water across a membrane

_______ regulates what enters and leaves a cell.  

• Cell Membrane
• Nucleus
• Mitochondria
• Cytoplasm

Osmosis is specifically.....

• diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration

• the diffusion of particles from an area of high concentration to an area of low concentration

• diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration

• the diffusion of particles from an area of low concentration to an area of high concentration

Where is there a low concentration of dye?

• at the bottom of cup
• in the color
• at the top of cup 
• no concenteraion gradient

What does “high concentration area” mean?

• Spread out
• Tightly packed together
• Uncrowded
• Spacious