Cell Membrane and Transport

Which statement best describes the cell membrane?

• The protective outer layer that controls what enters and leaves the cell.
  
• Stores information on DNA molecules / Directs and controls the activities of the cell.
  
• A folded membrane that moves materials around inside cells / Also acts as the site of manufacturing materials needed by the cell.
  
• The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
  

Tags

NGSS.HS-LS1-3

What is NOT TRUE about the cell membrane?

• It controls what enters and leaves the cell
• Semipermeable
• Phospholipid bilayer
• Contains digestive enzymes

What is embedded in the phospholipid bilayer?

• Proteins
• Salt
• Water
• Worms

What forms the channels and pumps in the phospholipid bilayer?

• Carbohydrates
• Proteins
• Hydrophilic heads 
• Lipids

Hydrophilic means...

• water-loving
• water-fearing
• nonpolar
• lipid soluble

Hydrophobic region of the cell membrane?

• E
• B
• C
• A 

Hydrophilic portion of cell membrane?

• A
• C
• D
• E 

The picture is an example of...

• active transport
• passive transport
• diffusion
• osmosis

What does a cell need to transport particles by active transport?

• Sun
• Wind
• Energy
• Channels

What does the "fluid mosaic model" mean about the cell membrane?

• It can dissolve into fluid.
• The cell is mostly made of mosaic molecules.
• It looks like a flexible pattern made up of different parts.
• Somebody else should name these things.