Cell Membrane & diffusion

In passive transport, the concentration gradient goes from..

• Low to low

• High to low

• Low to high

• High to high

Which type of Passive Transport is being represented in this picture?

• Passive Diffusion
• Simple Diffusion
• Active Diffusion
• Facilitated Diffusion

Hydrophobic region of the cell membrane?

• E
• B
• C
• A 

Hydrophilic portion of cell membrane?

• A
• C
• D
• E 

What forms the channels and pumps in the phospholipid bilayer?

• Carbohydrates
• Proteins
• Hydrophilic heads 
• Lipids

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.MS-LS1-2

What three substances make up the cell membrane?

• lipids, starches, nucleic acids
• lipids, fats, sugars
• lipids, sugars, proteins
• lipids, proteins, carbohydrates

What is the movement of molecules from an area of high to low concentration and does not require energy?

• osmosis
• diffusion
• facilitated diffusion
• active transport

The yellow and brown portion of this image is:

• protein

• phopholipid

• carbohydrate

• cholesterol

Tags

NGSS.MS-LS1-2

The purple regions of the image represent:

• phospholipid

• cholesterol

• proteins

• carbohydrates

Tags

NGSS.MS-LS1-2