1. a. What is health? b. Name two factors that can affect health.
2. a. Name two health conditions caused by mutations in genes or chromosomes. b. Identify two environmental factors that may increase the likelihood of a mutation.
3. a. What is cancer? b. List two possible treatments for cancer.
4. Copy and complete the sentences.
All of the food eaten by an organism is called its ____________. The unit used to measure the energy content of food is the ____________. A ____________ ____________ contains the correct quantities of all key biomolecules and nutrients for good health. If a person’s diet lacks enough of a particular nutrient, they may develop a ____________ ____________.
5. Name the four biomolecules needed by all organisms. 6. Match each biomolecule or nutrient with a function it carries out.
Biomolecule or nutrient
1. Minerals 2. Proteins 3. Water
4. Vitamins
5. Carbohydrates 6. Fats
Description
a. Keeps gums and teeth healthy b. Regulates temperature c. Provides a supply of energy d. Assists with chemical reactions e. Protects internal organs
f. Makes muscle, hair and enzymes
7. Name one food source of each of the following biomolecules or nutrients: a. carbohydrates b. proteins c. fats d. vitamins e. minerals f. water
8. The orange-brown chemical iodine is used to test for the presence of starch in food. Copy and complete the following sentences using the words below:
negative starch positive blue-black milk iodine If a drop of iodine is placed on a potato, the iodine will turn ____________. This colour change is a ____________ result for ____________ in potatoes.
If a drop of iodine is placed in milk, the ____________ will not change colour. This is a ____________ result for starch in ____________.