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Human Body & Health

Grade 5 · On-level practice · 8 questions · Version PG-1IS497S-1Y2A

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

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 18
  1. How do lungs and circulation interact?Lungs add oxygen to blood, which carries it to cells
  2. What is the immune system's job?Defend against harmful pathogens
  3. What carries oxygen from lungs to cells?The circulatory system
  4. How do vaccines help?They prepare immunity to recognize a pathogen
  5. What maintains stable internal conditions?Homeostasis
  6. Which cells carry oxygen?Red blood cells
  7. What do kidneys remove from blood?Wastes and extra water
  8. Why does heart rate rise during exercise?Muscles need oxygen and nutrients faster

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.