BI-234 - LECTURE - CHAPTER 14 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED
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Course
BI 234
Institution
BI 234
BI-234 - LECTURE - CHAPTER 14 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED
persistent interactions between organisms
Symbiosis
symbiotic relationship where 2+ organisms benefit from their interactions
Mutualism
symbiotic relationship where one organism benefits from another wi...
symbiotic relationship where 2+ organisms benefit from their interactions
Mutualism
symbiotic relationship where one organism benefits from another without
causing harm or benefit to it
Commensalism
symbiotic relationship where one organism is the parasite and the other is the
host
Parasitism
Normal flora
Normal microbiota
the community of microorganisms that permanently live on a specific body site of
an organism
Resident microbiota
microorganisms that temporarily live on a body surface or area that can easily be
removed through hygiene practices
Transient microbiota
Contacts and the environment (mom from birth and diet)
, Where do we acquire our normal microbiota?
Commensalism
What type of symbiosis do we see primarily in resident microbiota?
Elimination from body's defense cells, chemical or physical changes to the body
How do we expel transient microbiota?
Normal microbiota that can cause disease under certain circumstances
Opportunistic pathogens
E. coli is the gut getting into the urethra, causing UTI
What is an example of an opportunistic pathogen?
Animal reservoirs, human reservoirs, and nonliving reservoirs
What are the 3 types of reservoirs of infectious disease?
Diseases that naturally spread from animal host to humans
What are zoonoses?
Direct contact with animal or its waste, eating animal, blood sucking arthropods
How can animals spread zoonoses to humans?
Healthy carriers may have protective defensive systems that others do not
Why do some human carriers never get sick, but others who get infected do get sick?
Soil, water, food
What are some examples of nonliving reservoirs?
the presence of microbes in or on the body
Contamination
when an organism evades the body's external defenses, multiplies, and becomes
established within the body
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