Cellular Transport

Diffusion is the movement of particles

• from low to high concentration
• from  high to low concentration
• from equilibrium to areas of high concentration
• all of the above

The current model of the plasma membrane is called the

• hydrophobic layer
• transport bilayer
• phosphoproteins
• fluid mosaic model

What characteristic of the cell membrane allows only certain material to pass through?

• selective gating
• selective permeability
• hydrophilia
• selective service

Facilitated diffusion requires

• no energy
• energy

When moving particles AGAINST their concentration gradient, this is called?

• Passive Transport
• Osmosis
• Active Transport
• Facilitated Diffusion

Endocytosis is defined as

• the movement of large molecules from the inside of the cell to the outisde of the cell using channel proteins. 
• the movement of large molecules from the inside of the cell to the outisde of the cell membrane vesciles. 
•  the movement of large molecules from the outside of the cell to the inside of the cell using membrane vesciles.
• the movement of large molecules from the outside of the cell to the inside of the cell using channel proteins. 

Exocytosis is the movement of

• any type of substance from outside the cell to the inside of the cell. 
• very large substances from outside the cell to the inside of the cell. 
• any type of substance from inside the cell to the outside.
• very large substances from inside the cell to the outside.

Tags

NGSS.HS-LS2-3

Active transport _______ and is the movement of a substance from _____ to _____ concentration

• requires energy, high to low
• requires no energy, low to high
•  requires no energy, high to low
•  requires energy, low to high

If something goes "along" its concentration gradient it goes from

• an area of low concentration to an area of high concentration
• an area of high concentration to an area of low concetration

In this image, the cell is using which type of molecular transport?

• Osmosis
• Diffusion 
• Endocytosis
• Exocytosis