Cellular Homeostasis

What are the 3 functions of the cell membrane?

• Maintain Homeostasis

• Protect the inside of the cell from the external environment

• Allows specific things to enter or exit the cell (semi-permeable)

• Keep all solutes out of the cell, only allows water in

Tags

NGSS.HS-LS1-3

_ _ _ _ _ _ _ transport moves molecules from high to low concentration.

Answer explanation

All cells have some solutes inside of them

• True

• False

Answer explanation

All cells will have some solutes inside of them like - sodium, calcium, oxygen, glucose....

What would happen to a normal cell if it was placed in a solution that has a high concentration of solutes?

• the cell will swell

• the cell will not change

• the cell will shrink

Answer explanation

Tags

NGSS.HS-LS1-3

Osmosis is the movement of ________ across the cell membrane from areas of high concentration to low concentration.

• water

• solute

Answer explanation

Facilitates diffusion moves molecules across the cell membrane using....

• phospholipids

• carrier protein

• magic

Answer explanation

If this cell was placed in a solution with a lot of solute, what would happen to it?

• water would enter, cell swells

• water would leave, cell shrinks

• it would remain the same

Answer explanation

The cell will shrink

Tags

NGSS.HS-LS1-3

If this cell was placed in a solution that has an equal amount of solutes, what would happen to the cell?

• water enters cell, cell swells

• water leave cell, cell shrinks

• cell remains the same

Answer explanation

Tags

NGSS.HS-LS1-3

Which of the following are characteristics of Active Transport?

• uses ATP

• moves from low to high concentrations

• endocytosis or exocytosis

• moves against the concentration gradient

Answer explanation

Encodytosis and Exocytosis are also parts of active transport!

Which of the following processes is primarily responsible for maintaining cellular homeostasis?

• Diffusion

• Osmosis

• Active Transport

• Endocytosis

Tags

NGSS.HS-LS1-3