Diffusion and Cell Membrane

All cells have a:

• Nucleus

• cell (plasma) membrane

• Cell wall

• Mitochondria

Another name for the cell 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 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.

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

• High, low
• Low, high
• Low, low,
• High, high

What is the definition of  Selective Permeability?

• The movement of materials across the cell membrane that requires NO ENERGY from the cell.
  
• The movement of materials through (or across) the cell membrane
  
• The ability of the cell membrane to allow some things to pass through while preventing other things from passing through.
• The movement of molecules from an area of high concentration (where the molecules are more crowded together) to a area of low concentration (where molecules are more spread apart)
  

Tags

NGSS.MS-LS1-2

_______ regulates what enters and leaves a cell.  

• Cell Membrane
• Nucleus
• Mitochondria
• Cytoplasm

Tags

NGSS.MS-LS1-2

Just like Coke is a type of soda, __________ is a type of ___________.

• diffusion, osmosis
• concentration, equilibrium
• equilibrium, concentration
• osmosis, diffusion

Tags

NGSS.HS-PS1-6

Movement of materials from high to low concentration through a protein channel. 

• Passive Transport
• Active Transport

Tags

NGSS.MS-LS1-2

During osmosis

• water moves from high to low concentration
• large or oddly shaped molecules move across a cell membrane
• water moves when energy is used
• proteins are built