Quiz
Diffusion
21 days ago by
miriam_david_04535
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• Question 1
30 seconds
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Q.

Diffusion occurs only in gases

True

False

• Question 2
45 seconds
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Q.

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

• Question 3
45 seconds
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Q.

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

• Question 4
30 seconds
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Q.

The movement of particles is __________, resulting in the particles being spread throughout the container

Structured

In a straight line

Random

In curved, way motions

• Question 5
30 seconds
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Q.

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

• Question 6
45 seconds
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Q.

The picture below is an example of _________________.

osmosis

isotonic

diffusion

active transport

• Question 7
45 seconds
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Q.

How long does diffusion last?

Until the concentration of particles in the system is equal

Until a region in the system has a smaller concentration of particles than the other

Until a region in the system has a greater concentration of particles than the other

Until the particles disappear from the system

• Question 8
45 seconds
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Q. How does the concentration gradient affect diffusion?
The greater the concentration difference the faster the rate
The smaller the concentration difference the faster the rate
The greater the concentration the slower the rate
• Question 9
20 seconds
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Q. How does surface area affect the rate of diffusion?
Greater the surface area the slower the rate
Greater the surface area the faster the rate
Smaller the surface area the faster the rate
Surface area does not affect diffusion
• Question 10
30 seconds
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Q.

How does increasing temperature affect the rate of diffusion?

molecules move in orderly manner

Gives molecules more energy increasing the rate

Takes energy away from molecules slowing down the rate

collision of molecules slows down

• Question 11
45 seconds
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Q. Why is diffusion important?
Molecules need to be moved out of cells
Cells need a constant supply of some molecules whilst getting rid of others
There is no other way of transporting things in or out of a cell
It requires energy which is always being produced and needs to be used up
• Question 12
45 seconds
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Q.

Where is there a low concentration of dye?

at the bottom of cup

in the color

at the top of cup

• Question 13
45 seconds
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Q. The faster an object moves, the ________ kinetic energy it has.
more
less
none of the above
all of the above
• Question 14
30 seconds
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Q.

There are 24 molecules inside this cell. AFTER diffusion, how many molecules would be inside and how many would be outside?

There would be 12 inside and 12 outside

There would be 0 inside and 24 outside

The cell will stay the same with 24 inside

There will be 20 inside and 4 outside

• Question 15
45 seconds
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Q.

Why does the tea move out of the tea bag and into the water?

The warm water forces it out of the tea bag

There is equal concentration of water and tea

There is a higher concentration of tea in the bag and less in the water

There is a lower concentration of tea in the bag and more in the water

• Question 16
30 seconds
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Q.

_________ particle size allows for a larger surface area to be exposed for the reaction.

larger

smaller

• Question 17
45 seconds
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Q.

Why do large multicellular organisms need transport systems while simple unicellular organisms do not?

Large organisms have a much smaller surface area to volume ratio compared to smaller ones.

Diffusion does not work in large multicellular organisms.

Unicellular organisms have a much smaller surface area to volume ratio than multicellular organisms.

• Question 18
30 seconds
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Q.

Diffusion can occur in solids, liquids and gaseous materials

True

False

• Question 19
30 seconds
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Q.

Which of the following factors does NOT have a direct influence on the rate of diffusion?

Molecule size

Temperature

Color

Concentration

• Question 20
30 seconds
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Q. Which diagram best shows the end result of diffusion?