Passive Transport

Which of the following are types of passive transport?

• Osmosis

• Diffusion

• Exocytosis

• Fascilitated Diffusion

Passive transport...

• Requires energy

• Does not require energy

• Sometimes requires energy

With passive transport, molecules move from a ...

• low concentration to a high

• high concentration to a low

Passive transport moves molecules...

• With the concentration gradient

• Against the concentration gradient

• With and against the concentration gradient

Which type of passive transport uses a protein to help move molecules into or out of a cell?

• facilitated diffusions

• simple diffusion

• active transport

• osmosis

During osmosis, water moves to where there is more solute (things to dissolve), which is also where there is less water.

• True

• False

If a person drinks too much water in short amount of time, they....

• put their cells in a hypertonic solution, so their cells swell and eventually burst.

• put there cells in an isotonic solution, so their cells stay constant and do not change.

• put their cells in a hypotonic solution, causing their cells to swell and eventually burst.

• put their cells in a hypertonic environment, so their cells shrivel and eventually die.

Which statement is true?

• Sugar is hypertonic to the egg, causing water to leave the egg and the egg to shrivel.

• Sugar is isotonic to the egg, resulting in no change to the egg.

• Sugar is hypotonic to the egg, resulting in water entering the egg and the egg swelling.

• Sugar is hypotonic to the egg, causing water to leave the egg and the egg to shrivel.

What is the process called that allows small, nonpolar molecules to pass straight through the membrane, going with the concenrtation gradient?

• Active transport

• Facilitated Diffusion

• Osmosis

• Simple Diffusion

A sugar molecule, glucose, is very large and cannot pass through the membrane on its own. What type of transport is needed to move this large sugar molecule into a cell?

• Simple Diffusion

• Active Transport

• Passive Transport

• Facilitated Transport