Cell Membrane and Transport Quiz (in Class)

The concentration of glucose inside of a particular cell is 7%. The concentration of glucose in the blood surrounding the cell is 5%. What mechanism will likely be used in order to transport more glucose into the cell?

• Active transport

• Facilitated diffusion

• Simple diffusion

• Osmosis

• Endocytosis

Red blood cells are immersed in a hypertonic solution and observed under a microscope. What are the expected results?

• Water will enter the red blood cells by osmosis and they will expand and potentially burst.

• Water will leave the red blood cells by osmosis and they will shrivel as they lose cytoplasmic volume.

• Solutes will enter the red blood cells by simple diffusion, resulting in increased absorption of water and potential bursting.

• Solutes will leave the red blood cells by simple diffusion, resulting in decreased water absorption and shriveling as they lose cytoplasmic volume.

Tags

NGSS.HS-LS1-3

This structure surrounds all cells and regulates what enters and leaves the cell.

• Cell Wall

• Nucleus

• Plasma Membrane (Cell Membrane)

• Cytoskeleton

Tags

NGSS.MS-LS1-2

A plasma (cell) membrane allowing the movement of only certain particles across it is said to be _______.

• hypertonic
• polar
• selectively permeable
• at equilibrium

Tags

NGSS.MS-LS1-2

What is the name of the structure labeled "C" and what is its function?

• The structure is cholesterol and it helps to maintain membrane stability, and reduce membrane permeability.

• The structure is a protein and it helps with transport of materials across the membrane.

• The structure is a glycoprotein and it helps to maintain membrane stability, and reduce membrane permeability.

• The structure is a carbohydrate and it helps with transport of materials across the membrane.

• None of these accurately describe the structure and function of this membrane component.

What is the name of the structure labeled "D" and what is its function?

• The structure is cholesterol and it helps to maintain membrane stability, and reduce membrane permeability.

• The structure is a protein and it helps with transport of materials across the membrane.

• The structure is a glycoprotein and it helps to maintain membrane stability, and reduce membrane permeability.

• The structure is a carbohydrate and it helps with transport of materials across the membrane.

• None of these accurately describe the structure and function of this membrane component.

Which of the following would be true of "B"?

• It is a hydrophobic fatty acid tail. It is important for making the membrane semi-permeable.

• It is a protein. It is used to transport polar and ionic compounds across the membrane.

• It is a hydrophilic phosphate head. It is attracted to water.

• It is cholesterol and it hardens arteries.

• None of these accurately describe the structure and function of this membrane component.

Which of the following are characteristics of facilitated diffusion?

I. ATP is used

II. Membrane proteins are used

III. Movement of particles from low concentration to high concentration

IV. Movement of particles down their concentration gradient

• I and IV only

• I, II and III only

• II and IV only

• II and III only

In both diffusion and facilitated diffusion, particles move ________________.

• from high to low concentration (down their concentration gradient) overall.
• from low to high concentration (against their concentration gradient) overall.
• South
• using ATP energy

Match the following

• Endocytosis

• Higher in solutes

• Active Transport

• Lower in solutes

• Hypotonic

• A cell takes in large particles by surrounding them and making a vesicle that is brought into the cell.

• Exocytosis

• A cell expels large particles by fusing a vesicle with the cell membrane and releasing its contents outside.

• Hypertonic

• Movement from low to high concentration using ATP