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Human Body & Health

Grade 5 · On-level practice · 8 questions · Version PG-1GU71CZ-1Y2A

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

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 11
  1. How do vaccines help?They prepare immunity to recognize a pathogen
  2. Why is a balanced diet useful?It supplies varied nutrients
  3. How do lungs and circulation interact?Lungs add oxygen to blood, which carries it to cells
  4. What is the immune system's job?Defend against harmful pathogens
  5. Which cells carry oxygen?Red blood cells
  6. Why does heart rate rise during exercise?Muscles need oxygen and nutrients faster
  7. What carries oxygen from lungs to cells?The circulatory system
  8. Which system sends messages through nerves?The nervous system

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.