What is a concentration gradient?

Passive Transport and Concentration Gradients

Interactive Video
•
Biology, Science
•
6th - 8th Grade
•
Hard

Lucas Foster
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A type of chemical reaction
A difference in concentration of a substance across a space
A method of measuring volume
A measure of temperature change
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the room analogy, what do people moving from a crowded area to a less crowded area represent?
Concentration gradient
Evaporation
Precipitation
Condensation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to tea molecules in a teacup over time?
They sink to the bottom
They spread out evenly in the water
They remain inside the tea bag
They evaporate into the air
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of diffusion in a solution?
The solution becomes more concentrated
The solute particles settle at the bottom
The solution evaporates
The solute particles spread evenly throughout the solution
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is osmosis different from diffusion?
Osmosis requires energy input
Osmosis is faster than diffusion
Osmosis involves the movement of water across a semi-permeable membrane
Osmosis occurs only in solids
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a semi-permeable membrane?
A barrier that allows certain substances to pass through
A barrier that blocks all substances
A barrier that allows all substances to pass through
A barrier that allows only water to pass through
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does a gummy bear get bigger in water?
It absorbs air
It absorbs water through osmosis
It melts
It releases sugar
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