Lesson 5: The Immune System

Question 1

How does fever indicate that your body's immune system is doing its job?

Revolt · Accepted Answer

Fever raises the body's temperature to destroy harmful substances.

Question 2

Which are correct examples of physical (P), chemical (C), and biological (B) barriers?

Revolt · Accepted Answer

P: coughing; C: saliva; B: complement system

Question 3

A person who has allergies has a compromised immune system because the body’s immune system

Revolt · Accepted Answer

overreacts to an antigen.

Question 4

A person who has a weakened immune system may not be able to fight against infection because

Revolt · Accepted Answer

pathogens may enter the body and cause illness.

Question 5

A scientist wanted to formulate a pill to attack a specific type of bacteria that infects the throat. Which biological component would be best to use as a model for the pill’s function?

Revolt · Accepted Answer

antibodies

Question 6

How does inflammation help the body fight off further infection?

Revolt · Accepted Answer

Inflammation keeps harmful substances away from healthy cells.

Question 7

What do saliva, tears, and nasal mucus have in common?

Revolt · Accepted Answer

All can destroy bacterial cell walls.

Question 8

Which is an effect of a compromised immune system?

Revolt · Accepted Answer

decreased antibody production

Question 9

Lupus, a condition in which the body attacks its own cells, is an example of

Revolt · Accepted Answer

an autoimmune disorder.

Question 10

A few mold spores land on the skin but do not survive due to the lack of moisture and the presence of oxygen. These spores have been prevented from harming the body by which type of barrier?

Revolt · Accepted Answer

chemical

Lesson 5: The Immune System Answers

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