Membranes Flashcards
(29 cards)
Unsaturated fats in the membrane make it?
Fluidy
Saturated fats in the membrane make it?
Thicker viscous
High concentration to low
Diffusion
Does diffusion require energy
No
Diffusion of water? What gradient does it flow to? Does it need energy?
Osmosis, no, no
Do hydrophilic molecules or hydrophobic molecules pass through the membrane easier?
Hydrophobic
How much solute is in a solution is?
Tonicity
When there is more water outside the cell than inside?
Hypertonic
When there is more water in the cell
Hypo tonic
Equilibrium of water in the cell and the solute.
Isotonic
Plants want to be ISO, hypo, or hyper tonic
Hypo more water
Animals want to be hypo, ISO, or hyper tonic?
ISO. Too much burst, too little shrivel
When a cell bursts from being too hypotonic
Lysis
When a plant cell is swelled from water intake?
Turgid
High to low concentration. No energy required
Fascillitated diffusion
Fascillitated diffusion cannot allow contents to pass through the membrane without ________.
Transport proteins
These imbedded proteins, are code specific for what molecules they allow in and out
Channel proteins
These transport proteins, change shape to allow the molecules in?
Carrier proteins
This type of transport requires energy?
Active transport
Active transport flows from ______to ______ gradients.
High to low
Active transports protein to flow molecules is called:
The sodium potassium pump
Sodium potassium pump flows in _____ molecules and ____ molecules out of the cell
3Na,2K
The cytoplasm holds a _______ charge while the outside holds a _________
Negative, positive
Hydrogen ions hold what type of charge?
Positive
