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Osmosis and Diffusion Review (7th Grade)
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A carrot stick is placed in fresh water. What will happen over time?
 
the cells in the carrot will expand
 
the cells in the carrot stay the same
 
the cells in the carrot shrink
Is energy required for passive transport?
 
no
 
yes
Is energy required for active transport?
 
yes
 
no
In active transport, particles move from
 
low to high
 
high to low
 
side to side
In passive transport, particles travel from
 
high to low
 
low to high
 
side to side
moving large particles into the cell is
 
endocytosis
 
concentration
 
exocytosis
moving large particles out of a cell is
 
exocytosis
 
endocytosis
 
concentration
If you place a raisin in a bowl of water and they expand, what is this referred to as?
 
osmosis
 
diffusion
 
photosynthesis
If you place a drop of food coloring in a glass of still water. What is this considered?
 
diffusion
 
osmosis
 
photosynthesis
The smell of perfume moves across the entire room. This is an example of
 
diffusion
 
osmosis
 
photosynthesis
 
all of the above
What does semi-permeable mean?
 
only some particles are allowed in
 
every particle is allowed into the cell
 
no particles are allowed into the cell
What will happen to an animal cell placed in salt water solution?
 
it will shrink
 
it will expand
 
it will stay the same
What is an example of diffusion?
 
sugar molecules moving across semi-permeable membrane
 
water molecules moving across a membrane
 
an egg being placed in fresh water
Osmosis involves the movement of ________ particles across a membrane
 
water
 
particles
 
air
You place a tea bag in a cup of hot water. After a few minutes, you notice that the water has changed color. Is this diffusion or osmosis?
 
diffusion
 
osmosis
Particles naturally travel from...(passive)
 
high to low
 
low
 
low to high
 
high
When a cell pushes something out
 
exocytosis
 
active transport
 
diffusion
 
osmosis
When a cell takes something in by wrapping around it
 
endocytosis
 
active transport
 
passive transport
 
diffusion
Movement across a cell membrane using energy
 
active transport
 
osmosis
 
semi-permeable
 
diffusion
Movement across a cell membrane without using energy
 
passive transport
 
diffusion
 
semi-permeable
 
osmosis
When things spread out on their own (naturally)
 
diffusion
 
cell membrane
 
semi-permeable
 
osmosis
When water moves through a cell membrane
 
osmosis
 
semi-permeable
 
homeostasis
 
diffusion
Letting some things pass through but not others
 
semi-permeable
 
heterotroph
 
cell membrane
The skin of a cell that controls what goes in and out
 
cell membrane
 
autotroph
 
semi-permeable
 
osmosis
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