Selectively Permeable
The ____ is ______
Cell membrane Selectively permeable
This is a form of Passive or Active Transport
What is Passive.
Is osmosis passive or Active transport
Passive
Moving ____ across the cell ____ requires no _____
materials; membrane; energy
Name one type of molecule that can defuse across the cell membrane.
Oxygen; carbon dioxide; water
The organelle that is selectively permeable.
What is the cell membrane?
Does diffusion move molecules to a higher or lower concentration.
Higher
Is osmosis the diffusion of a membrane or selectively permeable membrane.
Selectively permeable membrane
In order to _____ this difference in the concentration of _______ cells use ____ transport.
maintain; molecules; active
What does facilitate mean
to make easier
fill in the blanks
A permeable ______ allows _____, and ______ to pass through
membrane, liquids, and gases
The diffusion of _____ into the cell does not _______ the cell to use any of it's ______
Oxygen; require; energy
Osmosis is ...
What is the diffusion of water molecules.
The two ways of active transportation.
What is endocytosis and exocytosis.
______ in the cell membrane form _____ which the ______ can pass.
Proteins; channels; sugars
Definition of selectively permeable
What is when substances get across the membrane while others can't
The act of diffusion.
What is the process by which molecules move from an area of higher concentration to an area of lower concentration.
Many _____ processes depend on _____ to bring them the water they need to _____.
cellular, osmosis, function
Three ways of Passive Transportation.
Diffusion, Osmosis, Facilitated Diffusion
Facilitated Diffusion is ...
When proteins in the cell membrane make channels so that sugars can pass through.
The reason why the cell being selectively permeable may help protect the cell.
DOES NOT HAVE TO BE EXACT
The cell may be able to not let in invaders if it blocks certain substances out.
True or False
Diffusion is caused by molecules colliding
True
Can osmosis only push water into the cell
No
Active
One substance that can't defuse as easily
What is sugar