Cellular Transport 2.3 U2 Flashcards
What is a missle cell?
Single layer of phospholipids
What is a concentration gradient?
Substances will naturally move from HIGH to LOW concentration.Eventually, an equilibrium would be reached (no gradient remaining).
What is Passive Transport?
No energy required!High to low (concentration)Easy peasy :)
What is Active Transport?
Energy is required!Low to high (concentration)Not easy peasy :(
What are the types of Passive Transport?
Diffusion, Facilitated Diffusion, Osmosis
What is Diffusion?
Particles move from high to low until reaches equilibrium
What is Facilitated Diffusion?
When molecules can’t go directly across a membrane, so they pass through special protein channels
What is Osmosis?
Diffusion of water through a selectively permeable membrane Through the membrane directly and in larger quantities through aquaporins Water will move across a membrane until the concentration of solute is the same on both sides!Solute vs. SolventSugar can’t move across the membrane by itself, it’s too large
What is Dynamic Equilibrium?
The substances will continue to move, but there is no net change in concentration on either side! Movement doesn’t stop entirely!
What are the different types of solutions?
Hypotonic Solution, Hypertonic Solution, Isotonic Solution
What is a Hypotonic Solution?
Water diffuses INTO cellCell expands
What is a Hypertonic Solution?
Water diffuses OUT OF cellCell shrinks
What is a Isotonic Solution?
Water moves in and out equallyCell stays the same
What is Lysed?
Bursts
What is Turgid?
Bloated