Piecing Together the Vitamins: teacher key

Healthy Eating, grade 10 edition, written for 10th grade. Follow the chemists, doctors and researchers who worked out what vitamins are. Then see what vitamins, minerals, protein and fibre do as food moves through the body.

Read the book. Print this page for the key.

Questions and answers

1. What did Hopkins find about young rats fed only pure nutrients?
   • They stopped growing until a little milk was added (answer)
   • They grew faster than other rats
   • They gave up eating milk
2. Who worked out the molecular structure of vitamin C in 1933?
   • Henrik Dam
   • Norman Haworth (answer)
   • Casimir Funk
3. Why did knowing a vitamin's chemical structure matter?
   • It let chemists replicate the vitamin (answer)
   • It made rats grow faster
   • It ended the Nobel Prize
4. What did Henrik Dam conclude about hempseed in chicken feed?
   • It held vitamin K, needed for blood to coagulate (answer)
   • It held vitamin D
   • It held iron
5. What does fortified mean?
   • Taken from soil
   • Boiled in water
   • Having vitamins added (answer)
6. What can bind iron so the body cannot use it?
   • Citrus
   • Tea (answer)
   • Beans

Words

• husk: outer shell
• collagen: tissue protein
• fortified: vitamins added
• fibre: plant food part
• vitamin: needed nutrient