WorksheetsDiffusion & Facilitated Diffusion
Total questions: 17
Worksheet time: 9mins
Diffusion & Facilitated Diffusion are both __________ transport.
Passive
Active
Easy
Free
Passive Transport is the movement of particles across the membrane from an area of [ ___ ] to an area of [ ___ ]
high to low
low to high
low to low
high to high
Passive Transport uses ____ energy
no
a lot of
a little bit of
some
_____________ is the free movement of particles across the membrane with the concentration gradient
diffusion
facilitated diffusion
active transport
fusion
Passive Transport is the movement of particles _________ the concentration gradient.
with
against
opposing
throughout
An example of diffusion is
CO2 and O2 exchange in the lungs
Glucose transport
Na+ / K+ Pumps
Exocytosis
What is the movement of particles with the concentration gradient using protein "helpers"?
diffusion
facilitated diffusion
active transport
enzymatic reactions
An example of facilitated diffusion is
CO2 and O2 exchange in the lungs
Glucose transport
Na+ / K+ Pumps
Endocytosis
Facilitated diffusion needs what to get particles from one side of the membrane to the other?
a membrane-spanning protein
a surface protein
a phospholipid
a carbohydrate
What is a difference between diffusion and facilitated diffusion?
movement of particles from [high] to [low]
a protein "helper"
movement of particles from [low] to [high]
energy
The general name for movement of substances across cell membranes without need of energy input
passive transport
active transport
The condition in which all acting influences are balanced.
equilibrium
dynamic equilibrium
net movement
Small changes of particles moving across the membrane that sum together to produce no net change.
equilibrium
dynamic equilibrium
net movement
The number of molecules moving one direction minus the number of molecules moving in the other direction.
equilibrium
dynamic equilibrium
net movement
occurs when the concentration of particles is higher in one area than another.
concentration gradient
concentration
[high] --> [low]
The relative amount of a given substance contained within a solution or in a particular volume of space; the amount of solute per unit volume of solution. The higher the concentration, the more solute is present.
concentration gradient
concentration
[high] --> [low]
Way to display that molecules are moving from an area of high concentration to an area of low concentration.
concentration gradient
concentration
[high] --> [low]
