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Human Body & Health

Grade 5 · On-level practice · 8 questions · Version PG-HMZ79H-1Y2A

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1.How do vaccines help?
2.Why does heart rate rise during exercise?
3.Which cells carry oxygen?
4.Which system sends messages through nerves?
5.What maintains stable internal conditions?
6.Why is a balanced diet useful?
7.How do lungs and circulation interact?
8.What do kidneys remove from blood?

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 6
  1. How do vaccines help?They prepare immunity to recognize a pathogen
  2. Why does heart rate rise during exercise?Muscles need oxygen and nutrients faster
  3. Which cells carry oxygen?Red blood cells
  4. Which system sends messages through nerves?The nervous system
  5. What maintains stable internal conditions?Homeostasis
  6. Why is a balanced diet useful?It supplies varied nutrients
  7. How do lungs and circulation interact?Lungs add oxygen to blood, which carries it to cells
  8. What do kidneys remove from blood?Wastes and extra water

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.