Cell Transport

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.

Tags

NGSS.MS-LS1-2

A can of air freshener is sprayed in the opposite side of the room.  Ten minutes later you start to smell the scent.  This is an example of 

• diffusion
• active transport
• endocytosis
• osmosis

Controlling what goes into or out of the cell without energy is called

• active transport
• endocytosis
• passive transport
• exocytosis

Tags

NGSS.MS-LS1-2

What is the name of the process in which molecules move from an area of high concentration to an area of low concentration across a selectively permeable membrane?

• Diffusion
• Osmosis
• Active Transport
• Facilitated Diffusion 

When molecules are spread evenly across the cell membrane, ______________________ is reached.

• difference
• transportation
• equilibrium
• solution

What is the difference between active and passive transport?

• Active does not need energy and passive uses ATP (energy)
• Active uses ATP (energy) and passive does not need energy
• Active stores transport proteins and passive releases 
• Active uses hormones and passive does not 

Two examples of passive transport are

• Earth and Sun
• Diffusion and Osmosis
• Energy and Wind
• None of the above

Against the concentration gradient
low to high
uses energy/ATP

• facilitated diffusion
• osmosis
• active transport
• simple diffusion

This picture represents what type of cell transport?

• endocytosis or engulfing

• exocytosis

• osmosis

• passive transport