Cell Transport

If a molecule's concentration outside a cell is higher than it is inside the cell, that solution is  ____________.

• isotonic
• hypotonic
• hypertonic
• none of the above

If someone sprays perfume in one room, soon people in another room can smell it.  Which of the following is this an example of?

• facilitated diffusion
• osmosis
• diffusion
• active transport

Which of the following does not require facilitated diffusion for movement across a cell membrane?

• large polar molecule
• small non-polar molecules
• sugars
• amino acids

If the concentrations of sugar solution is lower outside the cell than inside the cell, which of the following will happen by osmosis?

• sugar will move into the cell
• water will move into the cell
• sugar will move out of the cell
• water will move out of the cell

When particles move out of a cell through facilitated diffusion, the cell ____________.

• gains energy
• uses energy
• releases energy
• does not use energy

What form of energy is used in active transport?

• sunlight
• sugar
• ATP
• none of the above

In which direction will the sugar and water move if the membrane is permeable to both substances?

• Water will move to the right and sugar will move to the right
• Both water and sugar will move to the right
• Sugar will move to the right and water will move the the left
• Neither the water or sugar will move

If the membrane in the tube is only permeable to water then which side of the tube will be higher than the other once water has osmosed?

• left
• right
• they will be the same

Which of the following best describes the structure of a cell membrane?

• phospholipid bilayer with hydrophilic heads and hydrophobic tails
• phospholipid bilayer with hydrophobic heads and hydrophilic tails

Which of the following is not an example of active transport?

• Sodium potassium pump
• endocytosis
• exocytosis
• facilitated diffusion