Cell Membrane & transport

diffusion is the movement of 

• water from low to high concentration
• particles from low to high concentration
• water from high to low concentration
• particles from high to low concentration

large molecules and ions can easily pass through the cell membrane without any help

• true- they pass right through
• false- they need a protein channel 

which of the following terms means the movement of water from high concentration to low concentration

• diffusion
• prokaryotes
• osmosis
• concentration

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

• From the  A side  to the B-side
• From the B side to the A side
• none of the purple molecules would move

Which transport does not require energy?

• Passive
• Active 

Which is true about active transport?

• It requires energy
• it does not require energy
• It moves substances down the concentration gradient
• it moves material from high to low concentration

Which of the following does not have a cell wall?

• animal cells
• bacteria cells
• plant cells
• fungi

What does it mean that a cell membrane is semi-permeable?

• It allows all substances in
• It allows some substances in
• It allows nothing in

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of

• Osmosis
• Diffusion
• Equilibrium

The movement of molecules against a concentration gradient

• simple diffusion
• facilitated diffusion
• active transport
• osmosis