Chapter 4: Body at War

Question 1

any change that impairs the function of an organism in some way and causes it harm

Answer 1

disease

Question 2

a disease that cannot be spread from one organism to another

Answer 2

Non-infectious disease

Question 3

a disease that is contagious (can be spread from one organism to another)

Answer 3

Infectious disease

Question 4

a disease-producing organism

Answer 4

Pathogen

Question 5

a pathogen that is made up of cells, such as a tapeworm, fungus or bacterium

Answer 5

Cellular pathogen

Question 6

a pathogen that is not made up of cells, such as a virus, prion or viroid

Answer 6

Non cellular pathogen

Question 7

an organism that carries a pathogen between other organisms without being affected by the disease

Answer 7

Vector

Question 8

organism that obtains resources from another organism (host) that it lives in or on, and can cause harm to

Answer 8

Parasite

Question 9

organism living in a relationship with another organism

Answer 9

Host

Question 10

parasite that lives inside the body of its host organism

Answer 10

Endoparasite

Question 11

parasite that lives outside the body of its host organism

Answer 11

Ectoparasite

Question 12

a member of a large group of unicellular microorganism

Answer 12

Bacteria

Question 13

an abnormal and infectious protein that converts normal proteins into prion proteins

Answer 13

Prion

Question 14

a very simple microorganism that infects cells and may cause disease

Answer 14

Virus

Question 15

a toxin or other foreign substance which induces an immune response in the body

Answer 15

Antigens

Question 16

a substance derived from a micro-organism and used to kill bacteria in the body

Answer 16

Antibiotic