AP BIO CH7 REVIEW
Amount of unsaturated phospholipids equals?
More permeability
Higher temperate equals?
More permeability
What would active transport do in a multicellular organism
Na+ or K+ pump ( to maintain membrane voltage)
Does facilitated diffusion require an input of energy?
No
Does simple diffusion require an input of energy
No
Does simple diffusion require transport proteins
No
Where does simple diffusion occur in the membrane?
Phospholipid bilayer
What are the three types of diffusion
Simple diffusion, facilitates diffusion and active transport
In an independent cell what would facilitated diffusion do
Use aquaporins to take in or release water
Does active transport require an input of energy?
Yes
Does active transport require transport proteins
Yes
Does facilitates diffusion require transport proteins
Yes
What characteristics of the cell membrane determine what gets into the cell and what doesn't?
Amount of transport proteins, types of transport proteins, amount of unsaturated phospholipids, higher temperature
What would facilitated diffusion do in a multicellular organism
Aquaporins taking in or releasing H2O
Where does active transport occur in the membrane?
Carrier proteins
In an independent cell what would active transport do
Endocytosis of large food particles and exocytosis
If a cell membrane were composed of just a phospholipid bilateral, what properties would it have?
Flexible, nonpolar
Where does facilitated diffusion occur?
In channel proteins or carrier proteins
What would diffusion do in a multicellular organism
Intake O2 release CO2
In an independent cell what would diffusion do
Intake oxygen release CO2 waste
Why are some cells more permeable to some substances than others?
They have more of that particular type of protein
What different roles and functions do membrane proteins serve?
Transport polar substances and large molecules, cell to cell recognition
