Chapter X MC102 - MICROBIOLOGY AND PARASITOLOGY MICROBIAL ECOLOGYAND MICROBIALBIOTECHNOLOGY

is the systematic study of the interrelationships that exist between

organisms and their environment.

ecology

is the study of the numerous interrelationships between microorganisms and the world around them.

microbial ecology

Microorganisms are present both on and in our bodies;

collectively, they are reffered to as our___________

(oder term= normal flora)

indigenous microbiota

Defined as two dissimilar organisms living together in a close association.

symbiosis

is used to describe a symbiotic relationship in which neither symbiont is affected by the relationship

neutralism

is a symbiotic relationship that is beneficial to one symbiont and of no consequence (i.e., is neither beneficial nor harmful) to the other.

commensalism

is a symbiotic relationship that is beneficial to both symbionts (the relationship is mutually beneficial)

mutualism

is a symbiotic relationship that is beneficial to one symbiont (the parasite) and detrimental to the other symbiont( the host)

parasitism

what is the example of mutualism?

lichen

what is the example of commensals?

demodex mites

what is the example of parasite?

fllagelated protozoan