Steele HS Homeostasis & The Cell Membrane

All cells have a cell membrane

• True
• false

All cells have a cell wall.

• true
• false

How does a cell maintain homeostasis?

• Regulates what enters and leaves the cell
• Flexibility
• Protective barrier
• Structure and support

Tags

NGSS.HS-LS1-3

The cell membrane is selectively permeable, which means...

• All materials can enter and leave the cell
• Certain things can enter while others cannot
• The cell manually sorts through all materials
• Only certain cells can interact with the cell.

Lipid heads are...

• Polar
• Nonpolar

How many layers is the lipid bilayer?

• 1
• 2
• 3
• 4

Permeable means

• things can pass through
• the concentration levels are different
• it is permanen
• things are stuck

A phospholipid has 2 parts. What are they called? 

• Hydrophilic Head, Hydrophobic Tail 
• Hydrophobic Head, Hydrophilic Tail 

Tags

NGSS.MS-PS1-1

A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails. 

• phospholipid 
• Carbohydrate
• Cholesterol 
• Protein 

Tags

NGSS.MS-LS1-2

"Water Loving"

• Hydrophobic
• Hydrophilic 
• Hydroelectric 
• Hydroloric

Tags

NGSS.HS-ESS2-5