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Human Body & Health

Grade 5 · Stretch challenge · 8 questions · Version PG-1TEGKOO-1QHO

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1.How do vaccines help?
2.What is the immune system's job?
3.Why does heart rate rise during exercise?
4.How do lungs and circulation interact?
5.Which cells carry oxygen?
6.What do kidneys remove from blood?
7.What carries oxygen from lungs to cells?
8.Why is a balanced diet useful?

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 14
  1. How do vaccines help?They prepare immunity to recognize a pathogen
  2. What is the immune system's job?Defend against harmful pathogens
  3. Why does heart rate rise during exercise?Muscles need oxygen and nutrients faster
  4. How do lungs and circulation interact?Lungs add oxygen to blood, which carries it to cells
  5. Which cells carry oxygen?Red blood cells
  6. What do kidneys remove from blood?Wastes and extra water
  7. What carries oxygen from lungs to cells?The circulatory system
  8. Why is a balanced diet useful?It supplies varied nutrients

Worked example

Connect a structure to its function and explain how body systems work together.

Common mistake

Naming an organ without explaining its system role.

Helpful hint

Trace what enters, changes, and leaves the system.