Plasma

Plasma membranes are selectively permeable. This means

• anything can pass in and out

• the membrane regulates the passage of the material in and out of the cell

• glucose cannot enter the cell

• cholesterol cannot enter

Which one is the hydrophilic (water-loving) portion of the plasma membrane that can mix with water?

• A

• B

Which one is the hydrophobic (water-fearing) portion of the plasma membrane that can't mix with water?

• A

• B

Which structure is the hydrophilic polar head of the phospholipid molecule?

• F

• D

• C

• A1

Which structure is the hydrophobic tail of the phospholipid molecule?

• E

• B

• G

• A2

Identify a channel protein

• structure a

• strucure b

• structure j

• structure h

Which type of cell?

• Prokaryote

• Eukaryote

• Both

• Neither

Tags

NGSS.MS-LS1-1

This structure surrounds the cytoplasm of all cells and controls what enters and leaves the cell.

• cell wall

• nucleus

• cytosol

• plasma membrane

Tags

NGSS.MS-LS1-2

Define plasma membrane

• lipid that helps minimize effects of temperature

• only on the outer surface of the plasma membrane and are attached to proteins or lipids; form distinctive cellular markers

• flexible boundary of a cell that separates a cell from its surroundings

• may extend partway into the plasma membrane, cross the membrane entirely, or be loosely attached to its inside or outside face

Where can carbohydrates be found when part of a plasma membrane?

• On the outside of the membrane

• On the inside of the membrane

• Embedded part of the way into the membrane

• Embedded the whole way through the membrane

• All of the above