Youngless: Biology Cell Transport (Passive Transport)

selectively permeable

a property of cell membranes that allows some substances to pass through, while others cannot

passive transport (energy)

What type of transport Requires NO energy,

Passive transport (movement)

What type of transport moves molecules from high to low concentration, (Moves down the concentration gradient)

active transport (energy)

What type of transport requires Energy

Active Transport (movement)

What type of transport moves material across a cell membrane from low concentration to high concentration.( Moves against a concentration gradient)

Solute

the substance that is dissolved (sugar)

solvent

the substance in which the solute dissolves in (water)

solution

A mixture that forms when one substance dissolves another. (solute + solvent = ?)

concentration

A measurement of how much solute exists within a certain volume of solvent

concentration gradient

difference in the concentration of a substance from one location to another

diffusion

osmosis

facilitated diffusion

What are 3 types of Passive Transport.

O2 (oxygen) and CO2 (carbon dioxide)

What molecules can DIFFUSE through a cell membrane?

facilitated diffusion

Passive Transport. Movement of specific molecules (sugar/glucose) across cell membranes through protein channels. Move from high concentration to low concentration. Moves DOWN the concentration gradient.

Sugar(glucose)

Salts (Ions)

What types of molecules use FACILITATED DIFFUSION to cross the cell membrane?

Osmosis

Passive Transport. Diffusion of water through a selectively permeable membrane. Moves from high concentration to low concentration. Moves DOWN the concentration gradiant.

Water

What type of molecule uses OSMOSIS to cross the cell membrane?

Molecular Pumps, Endocytosis, and Exocytosis

What are 3 types of ACTIVE TRANSPORT?

Phospholipid

What makes up(name the molecule) the cell membrane?

Phosphate Head and Fatty Acid Tails

What are the 2 parts of a phospholipid?

Phospholipid Bilayer

How are the phospholipids arranged to create the cell membrane?

Hydrophilic

What does "water loving" mean?

Hydrophobic

What does "water hating" mean?

Phosphate head

What part of the phospholipid is hydrophilic?

Fatty Acid Tails

What part of the phospholipid is hydrophobic?

Maintain Homeostasis by controlling what goes in and out of the cell

What is the function/job of the cell membrane?