Cell Membranes and Molecular Movement

In passive transport, the concentration gradient goes from..

• Low to low

• High to low

• Low to high

• High to high

The cellular process in which materials are moved across a membrane from an area of low concentration to an area of high concentration is called

• Osmosis
• Simple Diffusion
• Active Transport
• Passive Transport 

Osmosis is the diffusion of __________.

• water
• glucose
• air
• passive transport

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.

• vacuole
• nucleus
• cell membrane
• cell wall

Tags

NGSS.HS-LS1-3

When particles move out of a cell through facilitated diffusion, the cell ____________.

• Gains energy
• Uses energy
• Releases energy
• Does not use energy

Large molecules are released by cell by 

• Endocytosis
• Exocytosis
• Passive transport
• Phagocytosis

Cell membrane is made up of 

• Polar heads, non-polar tails
• Non-polar heads, polar tails
• Polar heads, polar tails
• Non-polar heads, non-polar tails

Hydrophobic region of the cell membrane?

• E
• B
• C
• A 

Hydrophilic portion of cell membrane?

• A
• C
• D
• E