Cell Membrane

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.

Which of the following is NOT part of the cell membrane?

• Lipids
• Carbs
• Proteins
• Nucleic Acids

Match the following

• Lipids

• Helps the cell membrane maintain a fluid-like structure

• Plasma membrane

• The cell membrane is half flexible, half rigid

• Cholesterol

• Primary biomolecule that makes up the cell membrane

• Function of the cell membrane

• Controls what enters and leaves the cell to maintain homeostasis

• Semi-permeable

• Another name for the cell membrane

Tags

NGSS.MS-LS1-2

How many layers is the lipid bilayer?

• 1
• 2
• 3
• 4

Which of the following is responsible for allowing complex molecules to cross the cell membrane through channels?

• Lipids
• Carbs
• Proteins
• Nucleic Acids

What are the carbohydrates in the cell membrane for?

• To form channels and pumps

• To help cells identify one another

• To make the membrane strong

Which biomolecule forms the channels and pumps in the phospholipid bilayer?

• Carbohydrates

• Proteins

• Nucleic Acids

• Lipids

___________ allow cells to recognize each other and act like ID tags. 

• Carbohydrates 
• Proteins
• Phospholipids 
• Cholesterol

___________ strengthens, stabilizes, and allows the cell membrane to be flexible.

• Carbohydrates 
• Proteins 
• Phospholipids 
• Cholesterol