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Alhussan Biology — Stage 8

Chapter 5: Respiration and the Respiratory System

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Chapter 6: Nutrition, Health and Movement

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Chapter 7: The Health of the Environment

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Chapter 8: Weather and Climate

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Quiz

Biology 5.1 Diffusion in biology — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Smell detected by students at different distances after 5 minutes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
2.
Which statement is correct?
Diffusion needs energy from the cell.
Diffusion only happens in solids.
Starch diffuses easily through membranes.
Diffusion needs no energy from the cell.
3.
Which substance can NOT diffuse through a cell membrane?
Starch
Water
Oxygen
Carbon dioxide
4.
A cube of side 5 cm has what volume?
150 cm³
125 cm³
15 cm³
25 cm³
5.
Which term matches this definition? “Oxygen moving in and carbon dioxide moving out.”
Exhalation
Pleural membrane
Gas exchange
Waterlogged soil
6.
Which statement is correct?
Diffusion moves particles from low to high concentration.
A thick wall speeds up diffusion.
Starch diffuses easily through membranes.
Diffusion happens in liquids and gases.
7.
Which statement is NOT correct?
Food smells reach you by diffusion.
Oxygen concentration is low in respiring cells because it is used up.
Villi decrease surface area.
Diffusion is caused by the random movement of particles.
8.
Which is the correct definition of “Partially permeable membrane”?
A membrane that lets small molecules through but not large ones.
Time after exercise when breathing stays fast.
The windpipe held open by rings of cartilage.
Net movement of particles from high to low concentration.
9.
Which term matches this definition? “Finger-like projections in the small intestine.”
Villi
Passive process
Spirometer
ATP
10.
Time for acid to reach the centre of agar cubes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
11.
Which term matches this definition? “A difference in concentration between two regions.”
Partially permeable membrane
Warm-blooded
Concentration gradient
Agar
12.
Which statement is correct?
A thick wall speeds up diffusion.
Villi decrease surface area.
Diffusion needs energy from the cell.
Carbon dioxide enters leaves through the stomata.
13.
Time for acid to reach the centre of agar cubes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 3
A
B
C
D
14.
Smell detected by students at different distances after 5 minutes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
15.
Dye spread 18 mm in 4 min. What was the mean rate?
72.0 mm/min
4.5 mm/min
0.2 mm/min
14.0 mm/min
16.
Dye spread 36 mm in 4 min. What was the mean rate?
9.0 mm/min
0.1 mm/min
144.0 mm/min
32.0 mm/min
17.
Dye spread 18 mm in 6 min. What was the mean rate?
3.0 mm/min
108.0 mm/min
0.3 mm/min
12.0 mm/min
18.
Which term matches this definition? “A process that needs no energy from the cell.”
Equilibrium
Passive process
Warm-blooded
Irritant
19.
A cube has sides of 5 cm. What is its surface area to volume ratio? (6s² ÷ s³)
1.2 : 1
30.0 : 1
0.8 : 1
125.0 : 1
20.
Distance a dye spread in water at different temperatures in 10 minutes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
21.
In the lungs, oxygen diffuses:
From the alveoli into the blood
From the blood into the trachea
From the blood into the alveoli
Out of the body through the skin
22.
A cube of side 3 cm has what volume?
9 cm³
27 cm³
270 cm³
54 cm³
23.
A cube of side 4 cm has what volume?
64 cm³
16 cm³
96 cm³
12 cm³
24.
Which statement is correct?
Diffusion moves particles from low to high concentration.
Particles move from high to low concentration.
Villi decrease surface area.
Oxygen diffuses from cells into the blood.
25.
Which is the correct definition of “Agar”?
A short-term energy store made in respiration.
Air breathed in.
Tiny air sacs where gas exchange happens.
A jelly used to model cells in diffusion experiments.
26.
Which statement is correct?
Particles stop moving at equilibrium.
Diffusion needs energy from the cell.
Diffusion moves particles from low to high concentration.
Small molecules such as water can pass through a membrane.
27.
Time for acid to reach the centre of agar cubes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 6
A
B
C
D
28.
A cube has sides of 4 cm. What is its surface area to volume ratio? (6s² ÷ s³)
0.7 : 1
1.5 : 1
24.0 : 1
64.0 : 1
29.
A cube of side 8 cm: what is its surface area?
384 cm²
512 cm²
64 cm²
48 cm²
30.
A cube has sides of 2 cm. What is its surface area to volume ratio? (surface area = 6 × s², volume = s³)
30 : 1
8 : 1
24 : 1
3 : 1
31.
Which is the correct definition of “Equilibrium”?
A process that needs no energy from the cell.
A cell that makes sticky mucus.
The volume of a normal breath, about 500 cm³.
When particles are evenly spread with no net movement.
32.
Distance a dye spread in water at different temperatures in 10 minutes. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 7
A
B
C
D
33.
Particles move from high to ____ concentration.
higher
zero
low
equal
34.
Starch cannot pass through the cell ____.
vacuole
wall
nucleus
membrane
35.
Carbon dioxide diffuses from the blood into the ____.
bones
alveoli
liver
kidneys
36.
Diffusion happens in liquids and ____.
metals
solids only
vacuums
gases
37.
Carbon dioxide diffuses into a leaf through the ____.
roots
stomata
xylem
flowers
38.
Flower scent tells ____ where the flower is.
pollinators
fungi
predators
roots
39.
Particles keep moving at ____.
night
zero
low pressure
equilibrium
40.
Small cubes have a larger surface area compared with their ____.
colour
mass only
volume
price
41.
Food smells reach you by ____.
diffusion
reflection
osmosis
conduction
42.
Diffusion needs ____ energy from the cell.
some
electrical
a lot of
no
43.
True or false? Diffusion only happens in solids.
True
False
44.
True or false? Carbon dioxide enters leaves through the stomata.
True
False
45.
True or false? Particles keep moving at equilibrium.
True
False
46.
True or false? Sharks find injured prey by swimming up the concentration gradient of blood in the water.
True
False
47.
True or false? A thick wall speeds up diffusion.
True
False
48.
True or false? Oxygen concentration is low in respiring cells because it is used up.
True
False
49.
True or false? Particles move from high to low concentration.
True
False
50.
True or false? Diffusion happens in liquids and gases.
True
False
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Part of Chapter 5: Respiration and the Respiratory System — see every lesson and quiz in this unit.
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