cell membrane and transport practice

The function of the plasma membrane is....

• Vesicle with enzymes to digest waste

• Regulate what is transported into and out of the cell

• Package materials

• Make proteins

Particle of movement from an area of lower concentration to an area of higher concentration.

• Active transport

• Passive transport

Particle of movement from an area of higher concentration to an area of lower concentration.

• Active transport

• Passive transport

 Look at the diagram of a cross-section of a cell membrane below. The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane? 

• simple osmosis
• active transport
• simple diffusion
• facilitated diffusion

What type of transport is shown in the diagram?

• Osmosis

• Active Transport

• Passive Transport

• Diffusion

Which way would the purple molecules move through the semi permeable membrane?

• From side A to the side B.

• From side B to the side A.

• The purple molecules would not move.

Where will molecule X try to move to?

• Side A

• Side B

• Out of the box

• Stuck in the membrane

Which structure is most directly responsible for maintaining homeostasis in all cells?

• chloroplast

• cell membrane

• centriole

• cell wall

Tags

NGSS.HS-LS1-3

Based on these results, which statement correctly predicts what will happen to red blood cells when they are placed in a beaker containing a water solution in which the salt concentration is much higher than the salt concentration in the red blood cells?

• The red blood cells will absorb water and increase in size

• The red blood cells will lose water and decrease in size.

• The red blood cells will first absorb water, then lose water and maintain their normal size.

• The red blood cells will first lose water, then absorb water, and finally double in size.

What is the diffusion of water?

• osmosis
• active transport
• diffusion
• facilitated diffusion