Modeling Lab

In which situation would calcium enter the cell through active transport?

• The cell is 20% calcium, and the cell's environment is 80% calcium.

• The cell is 50% calcium, and the cell's environment is 50% calcium.

• The cell is 40% calcium, and the cell's environment is 60% calcium.

• The cell is 80% calcium, and the cell's environment is 20% calcium.

A student places a cell with an initial 5% salt concentration into a solution with a 50% salt concentration. What is most likely to happen and why?

• Water will move out of the cell because there is more salt outside the cell than inside.

• Water will move out of the cell because there is more water inside the cell than outside.

• Water will enter the cell because there is more water inside the cell than outside.

• Water will enter the cell because there is more water outside the cell than inside.

Which type of active transport is displayed?

• Endocytosis

• Exocytosis

• the volume of the solution

• the shape of dye molecules

• the temperature of the water

• the concentration of dye molecules

• an anaerobic environment outside the cell

• lower solute concentration outside the cell than inside

• more oxygen inside the cell than what can be utilized

• higher solute concentration outside the cell than inside

• 1

• 2

• 3

• 4

What are some characteristics of hypotonic solutions?

• Hypotonic solutions have higher solute concentration.
• Hypotonic solutions have lower solute concentration, cause cells to swell, and can lead to cell lysis.
• Hypotonic solutions are isotonic to cells.
• Hypotonic solutions cause cells to shrink.
• Hypotonic solutions do not affect cell volume.

• osmosis

• endocytosis

• active transport

• facilitated diffusion

Which diagram accurately shows simple diffusion?

• 
• 
• 
• 

• The cell will shrink because it will release water into the soaking solution.

• The cell will burst because it will absorb water from the soaking solution.

• The cell will not change because it contains dissolved particles.

• The cell will not change because it is not harmed by the water.