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SO — SoomaaliEN — English

Breathing, respiration and gas exchange

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Lesson details

Lesson outcome

Waxaan sharxi karaa farqiga u dhexeeya neefsashada, neefsiga unugyada, iyo is-weydaarsiga gaaska.

Introduction

In this lesson: I can describe the differences between breathing, respiration and gas exchange. Humans and other animals breathe to move air in and out of their lungs. Cells need oxygen from the air for cellular respiration, to provide energy for life processes.

Show transcript
Humans and other animals breathe to move air in and out of their lungs. Cells need oxygen from the air for cellular respiration, to provide energy for life processes. Cellular respiration produces carbon dioxide as a waste product. Oxygen needs to be absorbed into, and carbon dioxide needs to be removed from, the human body. In gas exchange, oxygen diffuses from the lungs into the blood; carbon dioxide diffuses from the blood into the lungs.

Worksheet

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Quizzes

  1. 1. Which of the following is the place inside a cell where cellular respiration takes place?

    • chloroplast
    • Correct answer:mitochondria
    • nucleus
    • vacuole

  2. 2. The human body...

    • ...contains a small number of cells.
    • Correct answer:...is made up of many cells.
    • ...is one big cell.
    • ...only has cells between the organs.

  3. 3. Which of the following is used by the body as a source of energy?

    • Fibre
    • Water
    • Correct answer:Sugar
    • Vitamins

  1. 1. What is in the air we breathe **in**?

    • Just oxygen.
    • Just carbon dioxide.
    • A mixture of oxygen and carbon dioxide.
    • Correct answer:A mixture of oxygen, carbon dioxide and other gases.

  2. 2. What is in the air we breathe **out**?

    • Just oxygen.
    • Just carbon dioxide.
    • A mixture of oxygen and carbon dioxide.
    • Correct answer:A mixture of oxygen, carbon dioxide and other gases.

  3. 3. Which process involves moving air into the lungs?

    • Correct answer:Breathing
    • Cellular respiration
    • Gas exchange

  4. 4. Which process takes place in the mitochondria of cells?

    • Breathing
    • Correct answer:Cellular respiration
    • Gas exchange

  5. 5. Which process involves diffusion of gases between air sacs in the lungs and blood vessels?

    • Breathing
    • Cellular respiration
    • Correct answer:Gas exchange

  6. 6. Which process produces carbon dioxide as a waste product and provides energy for life processes in cells?

    • Breathing
    • Correct answer:Cellular respiration
    • Gas exchange

What pupils see

The same lesson as a pupil sees it. You can set any section as work on its own.

  • IntroductionPrepare
  • Starter quizActivate · 3 questions
  • Lesson videoLearn
  • Exit quizCheck · 6 questions
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