Question 1

What does movement down the concentration gradient mean?

Accepted Answer

From area of high concentration to area of low concentration

Answer

Between areas of both high concentration

Answer

Between areas of both low concentration

Answer

From area of low concentration to area of high concentration

Question 2

videoq:mv6Ehv06mXY: 0:46//What type of endocytosis is shown in the video?

Accepted Answer

Phagocytosis

Answer

Receptor-mediated

Answer

<P>Exocytosis</P>

Answer

Pinocytosis

Question 3

What molecules does the plasma membrane allow to cross by simple diffusion?

Accepted Answer

freetextm://Oxygen:Carbon dioxide:Lipids

Question 4

What molecule does the plasma membrane allow to cross during osmosis?

Accepted Answer

freetext://solvent

Question 5

Arrange the steps of carbon dioxide flow from the body back into the atmosphere.

Accepted Answer

ordering://Carbon dioxide is created by every cell|1:Carbon dioxide diffuses from your cell into your body|2:Your heart pumps carbon dioxide-rich blood towards the lungs|3:Carbon dioxide diffuses from your blood into your lungs|4:Carbon dioxide is pushed out of your lungs and out of your mouth|5

Question 6

Classify the following descriptions into the kind of osmotic conditions they describe.

Accepted Answer

sorting://Isotonic|solution in which the solute concentration is the same,condition that animal cells require,plant cell loses turgor pressure:Hypotonic|solution with lower solute concentration,solution with higher water concentration,condition that plant cells require,plant cell with good turgor pressure,red blood cell brusts:Hypertonic|solution with higher solute concentration,plant cell loses turgor pressure

Question 7

Match the cell membrane structure to its function.

Accepted Answer

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