Diffusion occurs only in solids
How do the particles move in diffusion?
From a region of low concentration to a region of high concentration
From a region of high concentration to a region of low concentration
From a region of low concentration to a region of low concentration
From a region of high concentration to a region of high concentration
How long does diffusion last?
Until the concentration of particles in the system is equal
(Select this answer and I swear i'll make it harder for you in the assessment task)
Until a region in the system has a greater concentration of particles than the other
Until the particles disappear from the system
How does the body remove carbon dioxide from the cells?
The body cells converts carbon dioxide into carbon monoxide
The body cells don't expel the waste, they store them for future use
The body cells expel the carbon dioxide through the use of the nucleus
The carbon dioide diffuses out of the body cells and into the bloodstream due to differences in the concentration gradient
The movement of particles is __________, resulting in the particles being spread throughout the container
In a straight line
In curved, way motions
What happens to the coffee particles when coffee is added to hot water?
They sink to the bottom of the cup
They spread out
They clump together
Which diagram best shows the end result of diffusion?
What does a 'region with high concentration' mean?
An area with a SMALL number of particles
An area with a LARGE number of particles
An area with an UNEVEN number of particles
An area with no particles
Diffusion moves along the __________
conservation of energy
Diffusion & Facilitated Diffusion are both __________ transport.
Passive Transport uses ____ energy
a lot of
a little bit of
Passive Transport is the movement of particles _________ the concentration gradient.
An example of diffusion is
CO2 and O2 exchange in the lungs
Na+ / K+ Pumps
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]
The general name for movement of substances across cell membranes without need of energy input