New
New
Year 9

Cellular respiration

I can describe what cellular respiration is and explain why it happens in all living organisms all the time.

New
New
Year 9

Cellular respiration

I can describe what cellular respiration is and explain why it happens in all living organisms all the time.

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Lesson details

Key learning points

  1. Cellular respiration is a chemical process that uses glucose, from food, as a fuel to provide energy for life processes.
  2. Examples of life processes that require energy from cellular respiration.
  3. Cellular respiration happens in all living organisms all the time to provide the energy to keep them alive.
  4. Differences between breathing and respiration.

Keywords

  • Cell - A cell is the smallest living building block of an organism.

  • Cellular respiration - Cellular respiration is a chemical process that uses glucose, from food, as a fuel to provide energy for life processes.

  • Glucose - Glucose is a sugar that our cells use as fuel for cellular respiration.

  • Breathing - Breathing is the process in which air is moved in and out of the lungs.

  • Mitochondria - Mitochondria are cell organelles in which cellular respiration takes place in animals and plants.

Common misconception

Thinking that only animals respire, and that plants only photosynthesise (and do not respire).

This lesson uses examples of plants respiring in order to address this misconception.

Remind students of the common processes that take place in all living things, and give examples of the way plants carry out these processes to help show that plants are living things that also respire.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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6 Questions

Q1.
Starting with the smallest put these in size order.
1 - glucose
2 - mitochondria
3 - cell
4 - muscle tissue
Q2.
Which gas do humans need from the air that we breathe in?
Correct Answer: Oxygen, oxygen
Q3.
Where in the human body does gas exchange take place?
Correct Answer: Lungs, Alveoli, The lungs, lung
Q4.
Order the path of air entering the lungs.
An image in a quiz
1 - trachea
2 - bronchi
3 - bronchioles
4 - alveoli
Q5.
Match the word to its description.
Correct Answer:Inhalation,This causes air to move into the lungs.

This causes air to move into the lungs.

Correct Answer:Exhalation,This causes air to move out of the lungs.

This causes air to move out of the lungs.

Q6.
True or false? Humans obtain glucose for respiration by eating carbohydrates.
Correct answer: True
False

6 Questions

Q1.
Common life processes require energy from respiration. Which processes take place in all living organisms?
Talking
Correct answer: Movement
Correct answer: Reproduction
Hearing
Correct answer: Sensitivity
Q2.
What of these are reactants of cellular respiration?
Carbon dioxide
Correct answer: Glucose
Correct answer: Oxygen
Water
Q3.
Complete the sentence by matching the location to its description.
Correct Answer:Mitochondria,is where respiration takes place in plants and animals.

is where respiration takes place in plants and animals.

Correct Answer:Cytoplasm ,is where respiration takes place in bacteria.

is where respiration takes place in bacteria.

Q4.
When does cellular respiration take place?
When it is light.
When it is dark.
Correct answer: All of the time.
When an organism eats.
When an organism is active.
Q5.
True or false? Plants can breathe.
An image in a quiz
True
Correct answer: False
Q6.
Who is right?
Alex: "Breathing is the same as cellular respiration."
Laura: "Cellular respiration is how the lungs take in oxygen from the air."
Correct answer: Sam: "Cellular respiration is a chemical reaction that happens in cells."
Jun: "Cellular respiration provides living things with oxygen and glucose."