module 3

Question 1

inter-actions is between diffrent species or same

Answer 1

diffrent

Question 2

intra- actions is between diffrent or same species

Answer 2

same

Question 3

symbiosis

Answer 3

when the interaction is close and long term

Question 4

competition

Answer 4

both species do worse when together

Question 5

comensalism

Answer 5

one species does beter and one is unaffected when together

Question 6

Amensalism

Answer 6

one species does worse and one is unaffected

Question 7

Antagonism

Answer 7

One species does worse and one does better

Question 8

mutualism

Answer 8

both species do better when together

Question 9

co-evolution is

Answer 9

evolutionary change in one species can evoke reciprocal change in the other species

Question 10

mutulists must

Answer 10

1. locate partner
2. establish associations
3. disperse afterwards

Question 11

endosymbiont

Answer 11

any organism that lives within the body or cells of another organism often(but not always) to mutual benefit

Question 12

evidence for mutualism

Answer 12

Mutualisims are stable over time
have clear orgins as antagonisms

Question 13

masisve and diverse communities of symbionts that every organism carries

Answer 13

microbiome

Question 14

natural host

Answer 14

the host species an infectious organism normally infects

Question 15

spillover

Answer 15

parasite winds up in new host to which it is not adapted to be transmitted among

Question 16

cross-species transmission

Answer 16

any transmission event from thenatural host species to a novel host species

Question 17

co-divergence

Answer 17

Among host-specific parasites/symbionts and their hosts

Question 18

congruent host and parasites

Answer 18

parasite evolutionary divergence linked to host evolutionary history

Question 19

virulence is

Answer 19

the harm done by a pathogen to the host following an infection

a relative term that describes the severity of a disease

Question 20

pathogenicity

Answer 20

refers to whether or not a pathogen causes disease

Question 21

emerging infections

Answer 21

new infections to humans

Question 22

overal transmition should be the greatest at

Answer 22

intermediate levels of virulence

Question 23

R0 or R not represents

Answer 23

expected number of secondary cases produced by a single infected individual in a completely suceptible population