Diffusion
No
What is osmosis?
Is energy required in active transport?
Yes
What is endocytosis?
Cell bringing in molecules & ions
What does "semipermeable membrane" mean?
A membrane that allows certain things come in and out, picky
What is diffusion?
The process of moving high concentration of ions to low concentrations
What is an isotonic diffusion?
There is no net movement, it's at an equilibrium
What is used to move ions and molecules in active transport?
Pumps
What is exocytosis?
Cell expelling molecules and ions out of it
What way does the concentration gradient go?
From high to low concentrations
Give me an example of an ion that would diffuse through a cell?
Water, O2, CO2, N2
What is a hypertonic solution?
How do ions move in active transport?
Against the concentration gradient
What is pinocytosis
"Cell drinking" = brining in large amounts of liquids inside
What is the ratio of the Sodium-Potassium Pump?
3Na+ : 2K+
What is simple diffusion?
The diffusion of ions through a semipermeable membrane
What is a hypotonic solution?
There is less water inside the cell, so water will come into the cell, causing it to swell.
What happens in primary active transport?
moves ions (Na+ & K+) across the membrane & creates difference in charge, which is dependent on ATP
What is phagocytosis?
"Cell eating" = engulfing large amounts into the cell
Give me one example of the 3 transporter proteins and how they work.
Uniporter: carries one specific ion or molecule
Symporter: Carries two different ions or molecules, in the same direction
Antiporter: Also carries two different ions or molecules, but in opposite directions
What is facilitated diffusion?
the diffusion of ions through protein channels
If a cell has 35% salt and it is placed in a solution that has 75% salt. What kind of solution will it be?
Hypertonic
More water inside cell so it will move outside.
What happens in secondary active transport?
movement of material (Na+ & glucose) due to electrochemical gradient established by primary ATP, does not necessarily require ATP
How does a cell bring in large amounts of material?
The membrane invaginates and encloses itself creating vesicles that trap and bring material in.
What's one factor that affects diffusion?
Extent of concentration gradient
Mass of the molecule
Temperature
Solvent density