Chapter 17 Lesson 3 Staying Healthy

Pathogens passed from person to person make _______ diseases such as colds and flu common.

• infectious

• noninfectious

Pathogens are less likely to get past your first-line defenses if you wash your hands before you eat and avoid putting objects in your mouth.

• True

• False

_______ blocks the Sun’s ultraviolet rays and limits the damage from sunlight.

• Sunscreen

• Pathogens

• Antibiotics

• Chemotherapy

_______ uses chemicals to kill cancer cells that are dividing rapidly.

• Sunscreen

• Pathogens

• Chemicals

• Antibiotics

• Chemotherapy

_______ are medicines that stop the growth and reproduction of bacteria.

• Sunscreen

• Pathogens

• Chemicals

• Antibiotics

• Chemotherapy

Skin cancer is a ________ disease.

• infectious

• noninfectious

Chemicals can be beneficial for people.

• True

• False

Choose two healthy life choices.

• Diet

• Sunscreen

• Smoking

• Drinking Alcohol

Which is directly linked to increased risk of skin cancer in humans?

• acid rain

• asbestos insulation

• sunlight exposure

• water pollution

How do vitamin supplements contribute to health?

• They block UV rays.

• They improve nutrition.

• They kill bacteria.

• They kill cancer cells.