E4 Quiz Host-microbe interactions

Question 1

a positive and obligatory relationship for both organisms

Answer 1

Mutualism

Question 2

Ex: eukaryotic cells + mitochondria
Ex: infants and vitamin A producing bacteria

Answer 2

Mutualism

Question 3

A positive relationship for both organisms

- Non-Obligatory

Answer 3

Synergism

Question 4

Ex: Normal body flora

Answer 4

Synergism

Question 5

Ex: Humans and bacteria in our digestive tracts

Answer 5

Synergism

Question 6

Ex:
1. bacteria synthesize growth factors
Vitamin B12, K, Niacin, Thiamin, Riboflavin, Folic acid

Answer 6

Synergism

Question 7

Ex:

2. Assist with the breakdown of fibrous wastes

Answer 7

Synergism

Question 8

Ex:

3. Stimulate development of the immune system

Answer 8

Synergism

Question 9

When a relationship is positive for one organism, and neutral for the other organism (normal body flora)

Answer 9

Commensalism

Question 10

Ex: Microbes on our skin that consume skin secretions

Answer 10

Commensalism

Question 11

Ex: lactic acid bacteria that lower pH of female reproductive tract

Answer 11

Commensalism

Question 12

When one organism benefits and the other is harmed.

Ex: Disease

Answer 12

Parasitism

Question 13

When both organisms are harmed (disease)

Answer 13

Competition

Question 14

When microbes are present

Answer 14

Contamination

Question 15

When microbes exist superficially as reproducing surface populations

Answer 15

Colonization

Question 16

When microbes enter the tissue

Answer 16

Infection

Question 17

1. When there is noticeable impairment of body function

Answer 17

Disease

Question 18

2a. Involves a microbe

Answer 18

Infectious Disease

Question 19

2b. Does not involve a microbe

Answer 19

Noninfectious Disease

Question 20

When an infectious disease can spread from one person to another

Answer 20

Communicable

Question 21

When an infectious disease can NOT spread from one person to another

Answer 21

Non-Communicable

Question 22

When a communicable disease is EASILY spread from host to host

Answer 22

Contagious Disease

Question 23

Disease caused by microbes from OUTSIDE the body

Answer 23

Exogenous Disease

Question 24

Disease caused by microbes already present in or on the body

Answer 24

Endogenous Disease

Question 25

When a microbe can cause a disease only in hosts with impaired immune systems or when relationships become unbalanced.

Answer 25

Opportunistic Disease

Question 26

+/+

Obligatory

Answer 26

Mutualism

Question 27

+/+

Non Obligatory

Answer 27

Synergism

Question 28

+/O

Answer 28

Communalism

Question 29

+/-

Answer 29

Parasitism

Question 30

-/-

Answer 30

Competition