The Invisible Army: teacher key

Germs, grade 5 edition, written for 5th grade. Tiny germs are all around, but your body is ready for them. See how germs get in, how you fight back and how vaccines help.

Read the book. Print this page for the key.

Questions and answers

1. What do antibodies do?
   • Lock onto specific germs (answer)
   • Make a fever
   • Wash your hands
2. Why can a vaccine make you sore?
   • The needle is bad
   • Germs grow
   • Your body is learning (answer)
3. What is a toxin?
   • A poison that damages cells (answer)
   • A kind of soap
   • A fever
4. What does a virus need to make copies?
   • A bowl
   • A living cell (answer)
   • Soap
5. What causes a cold?
   • A virus (answer)
   • Soap
   • A fungus
6. Which kind of soap works?
   • Any soap (answer)
   • Only antibacterial soap
   • Only hot soap

Words

• bacteria: tiny living germs
• virus: tiny germ
• vaccine: germ-training shot
• toxins: cell-harming poisons
• antibodies: germ-grabbing proteins