Nutrients That Work Together: teacher key

Healthy Eating, grade 8 edition, written for 8th grade. Some nutrients need partners. See how vitamin C, vitamin D and fat help the body use iron, calcium and other vitamins, and follow food through digestion.

Read the book. Print this page for the key.

Questions and answers

1. What can bind iron so the body cannot use it?
   • Tea (answer)
   • Citrus
   • Beans
2. What does vitamin D help the body absorb?
   • Iron
   • Calcium (answer)
   • Zinc
3. Why does the body need a fresh supply of vitamin C each day?
   • It is stored in fat
   • It is made in the skin
   • It dissolves in water and is not stored (answer)
4. How many amino acids are called essential?
   • Nine (answer)
   • Thirteen
   • Four
5. What does fortified mean?
   • Grown in soil
   • Having vitamins added (answer)
   • Taken apart by saliva
6. What does the small intestine do?
   • Mixes food with juices
   • Turns waste into stool
   • Takes digested nutrients into the blood (answer)

Words

• fortified: vitamins added
• collagen: tissue protein
• peristalsis: food-pushing squeeze
• kernel: grain seed
• mineral: element from soil