Cell Transport Flashcards
Master the concept of Cell Transport and the different types.
Passive Transport
The Cell transport that DOESN’T require energy.
Active Transport
The type of Cell Transport that DOES require energy.
Concentration
The amount of molecules in a certain area. Think of it like density. The concentration gradient is from LOW TO HIGH (concentration)
Low Concentration
A low amount of molecules in a given area
High Concentration
A high amount of molecules in a given area
Passive Transport moves…
with the Concentration gradient. From LOW TO HIGH
Active Transport moves….
against the concentration gradient. From HIGH TO LOW
Types of Passive Transport are:
Osmosis, Diffusion, and Facilitated Diffusion
Types of Active Transport are:
Endocytosis and Exocytosis
Diffusion
The movement of molecules from an area of high concentration to an area of low concentration. DOESN’T REQUIRE ENERGY
Osmosis
The diffusion of WATER MOLECULES ONLY through a membrane DOESN’T REQUIRE ENERGY
Facilitated Diffusion
A type of diffusion where molecules pass through the membrane using special types of proteins known as transport proteins DOESN’T REQUIRE ENERGY
Transport proteins are:
Carrier proteins and Channel Proteins
Carrier Protein
Actually carries the molecule, assisting it to pass the membrane. A carrier protein looks like a scooper, and safely lets the molecule pass the membrane.
Channel Protein
A channel protein lets the organism pass through easily. It looks like a small version of a slide, but DOESN’T CARRY the molecule.
