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Diffusion

Total questions: 35

Worksheet time: 24mins

Name
Class
Date
1.
When particles move from areas of high concentration to areas less concentrated, this has taken place.
a)
diffusion
b)
mitosis
c)
endocytosis
d)
photosynthesis
2.
Which diagram best shows the end result of diffusion?
a)
F
b)
G
c)
H
d)
J
3.
The picture  is an example of _________________.
a)
isotonic
b)
diffusion
c)
osmosis
d)
active transport
4.
Where is there a high concentration of bbq smoke?
a)
In the bbq pit
b)
In the house
c)
Two streets over
d)
In the atmosphere
5.
A student put a few drops of lemon juice into an uninflated balloon.The student tied a knot in the balloon, placed it in a shoe box, and covered it with a lid. The following day, the student opened the box and was able to smell lemon in the box. Through what process were molecules able to pass through the balloon?
a)
respiration
b)
fermentation
c)
osmosis
d)
diffusion
6.
What does “high concentration area” mean?
a)
Spread out
b)
Tightly packed together
c)
Uncrowded
d)
Spacious
7.
Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration
a)
High, low
b)
Low, high
c)
Low, low,
d)
High, high
8.

In diffusion, particles move down a _______ ________

a)

Concentrate gradient

b)

Conceited gradient

c)

Concentration gradient

d)

Concentrated orange juice

9.
If there is more oxygen in the blood than in an organ, which direction would the oxygen move?
a)
Out of the blood
b)
Into the blood
10.
A higher concentration gradient, slows down diffusion. True or false?
a)
True
b)
False
11.
An increase in temperature does what to diffusion?
a)
Speeds it up
b)
Slows it down
c)
Has no effect
d)
I wish i knew. Really I do.
12.

Where is there a low concentration of dye?

a)

at the bottom of cup

b)

in the color

c)

at the top of cup

d)

no concenteraion gradient

13.

The picture below is an example of _________________.

a)

osmosis

b)

isotonic

c)

diffusion

d)

active transport

14.
What is diffusion?
a)
when molecules move 
b)
when molecules move from a high concentration to a low concentration.
c)
no movement 
d)
molecules move everywhere
15.
Where is there a low concentration of perfume?
a)
in the bottle
b)
on the hand
c)
in the room
d)
in the top
16.
The term used to describe when some molecules are able to pass through a membrane and others are not.
a)
Osmosis
b)
Diffusion
c)
Selective Permeability
d)
Equilibrium
17.
Molecules will move from an area of high concentration to an area of low concentration until they reach
a)
osmosis
b)
equilibrium
c)
selective permeability
d)
diffusion
18.

_____________ is the free movement of particles across the membrane with the concentration gradient

a)

diffusion

b)

facilitated diffusion

c)

active transport

d)

fusion

19.

An example of diffusion is

a)

CO2 and O2 exchange in the lungs

b)

Glucose transport

c)

Na+ / K+ Pumps

d)

Exocytosis

20.

Diffusion occurs only in solids

a)

True

b)

False

21.

What is a solute?

a)

A substance dissolved in another substance

b)

the substance doing the dissolving

22.

What is a solvent

a)

The one doing the dissolving

b)

The substance dissoved in another substance

23.

How do the particles move in diffusion?

a)

From a region of low concentration to a region of high concentration

b)

From a region of high concentration to a region of low concentration

c)

From a region of low concentration to a region of low concentration

d)

From a region of high concentration to a region of high concentration

24.

How long does diffusion last?

a)

Until the concentration of particles in the system is equal

b)

(Select this answer and I swear i'll make it harder for you in the assessment task)

c)

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

d)

Until the particles disappear from the system

25.

What happens to the concentration of carbon dioxide in your cells when you exercise

a)

Increase

b)

Decrease

c)

Remain constant

26.

What hapens to the concentration of oxygen in the body cells when you exercise?

a)

Increase

b)

Decrease

c)

Remain constant

27.

How does the body remove carbon dioxide from the cells?

a)

The body cells converts carbon dioxide into carbon monoxide

b)

The body cells don't expel the waste, they store them for future use

c)

The body cells expel the carbon dioxide through the use of the nucleus

d)

The carbon dioide diffuses out of the body cells and into the bloodstream due to differences in the concentration gradient

28.

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

a)

Structured

b)

In a straight line

c)

Random

d)

In curved, way motions

29.

What happens to the coffee particles when coffee is added to hot water?

a)

They sink to the bottom of the cup

b)

They spread out

c)

They clump together

30.

What does a 'region with high concentration' mean?

a)

An area with a SMALL number of particles

b)

An area with a LARGE number of particles

c)

An area with an UNEVEN number of particles

d)

An area with no particles

31.

Diffusion moves along the __________

a)

concentration gradient

b)

Avogadro's constant

c)

conservation of energy

32.

When does diffusion stop?

a)

After a day and a night

b)

When the particles are evenly spread out

c)

When there are no particles left

d)

When all the particles leave the system

33.

What is DIFFUSION?

a)
b)
c)
34.
What is the definition of  Selective Permeability?
a)
The movement of materials across the cell membrane that requires NO ENERGY from the cell.
b)
The movement of materials through (or across) the cell membrane
c)
The ability of the cell membrane to allow some things to pass through while preventing other things from passing through.
d)
The movement of molecules from an area of high concentration to a area of low concentration 
35.

If there is 5 percent water inside a cell and 5 percent water outside a cell

a)

more water will move inside the cell

b)

more water will move outside the cell

c)

There will be no net movement of water cells

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