The Plasma Membrane

The cell membrane is _______________ permeable.

• selectively

• somewhat

• physically

• ionically

The cell membrane is mostly made of what?

• Membrane-spanning Proteins

• Surface Proteins

• Phospholipids

• Carbohydrates

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.

Most of the cell membrane is made of...

• Lipids
• Carbs
• Proteins
• Nucleic acids

How many layers is the lipid bilayer?

• 1
• 2
• 3
• 4

Another name for plasma membrane is....

• cell wall
• Nuclear membrane
• Cell membrane
• plasma membrane

The function of the plasma membrane is....

• regulate what enters and leaves the cell.
• fight bacteria and viruses that enter the cell.
• make sure each cell reproduces 
• make sure each cell can move

The cell membrane is _______________ permeable.

• selectively

• somewhat

• physically

• ionically

What does "bilayer" mean?

• one layer
• two layers
• laminated
• bilateral

The word "passive" as in passive transport means ....

• the process uses energy
• the process does not use energy
• the process is energy
• all of these are correct