9.2 Study Guide Flashcards
1
Q
Simple diffusion
A
Molecules move directly over phospholipid bilayer
2
Q
Facilitated diffusion
A
Molecules move across membrane with help of proteins
3
Q
Osmosis
A
Diffusion of water across semi permeable membrane to dilute higher solute concentrations
4
Q
Hypertonic
A
Higher % solute, lower % water
5
Q
Hypotonic
A
Higher % water, lower % solute
6
Q
Isotonic
A
Equal % solute
7
Q
Active transport
A
Cells move molecules against concentration gradient
8
Q
What is permeability based on
A
Size (smaller)
Polarity (Nonpolar)
9
Q
Three things about facilitated diffusion
A
NO energy required (particles already moving)
Movement from high to low through a protein
Specific to particular substances
10
Q
What temperature do molecules diffuse the fastest
A
High temperature
