Structures and Functions of Living Organisms Study Guide

A disease that can be passed from person to person is known as __________________

A cut on the skin is a sign of infection as a result of

Penicillin helped with what in medicine?

What vaccine was the biggest accomplishment in medicine in the 20th century?

Which is more likely to spread between people- a genetic mutation or a virus?

What is a vector?

The bacteria B. anthracis causes the deadly disease anthrax. Here is one way humans can

contract the disease:

1. The bacteria form tough endospores that rest in soil indefinitely.

2. Grazing animals such as sheep inhale the endospores from the soil.

3. Once inside the sheep, the spores reactivate and cause infection.

4. Infected sheep then pass the bacteria to humans who become infected.

Who was the vector of the anthrax?

• water

• animals

• soil

• humans

Name a way that infectious diseases can be passed. Then, get 3 more ways from your classmates.

Why are cuts on the skin treated with an antiseptic?

Name a difference between an epidemic and pandemic.