BMS 504 Exam 4 (latest update 2025-
2026) Practical Review Questions with
Complete Solutions {Grade A}
How many bacteria live on us humans? - correct answer 1x10^15
What precent of our genome is composed of human endogenous retrovirus? - correct
answer 8%
What are the possible outcomes of interacting with a microorganism? - correct
answer - Transiently colonization
- permanent colonization
Transiently colonization? - correct answer does not become a permeant part of your
microbiome, it goes away
Permanent colonization? - correct answer microorganism you come into contact with
becomes a permanent resident of your body
What is disease? - correct answer when human microbiome interactions leads to
damage of the host and interruption of normal function
Where does majority of disease occur? - correct answer epithelial tissue
, BMS 504 Exam 4 (latest update 2025-
2026) Practical Review Questions with
Complete Solutions {Grade A}
What are epithelial tissues? - correct answer tissue located on the outside of
organism (our skin)
What characteristics do animals provide as a favorable environment for
microorganism growth? - correct answer - temperature is consistent
- pH in neutral range
- regular supply of nutrients for growth
What is microbiome referred to s sometimes? - correct answer "normal flora"
what is dysbiosis - correct answer changes in your microbiome tat lead to disease
What are the normal flora relationships? - correct answer - commensalism
- mutualism
What is commensalism? - correct answer - host human provides benefit to bacteria
but bacteria do not provide any benefit to host
What is mutualism? - correct answer - both bacteria and host benefit from
colonization
, BMS 504 Exam 4 (latest update 2025-
2026) Practical Review Questions with
Complete Solutions {Grade A}
What are core regions of the microbiome? - correct answer - skin
- upper respiratory tract
- gastrointestinal tract
- genituorinary tract
FIX What's involved in the upper respiratory tract? - correct answer - bacteria here are
usually non pathogenic
- nasal cavity - staphyloccocus sp
- throat - streptococci
- oropharynx contains anaerobic microbes = actinomyces, fusobacterium, Neisseria
What is Enterobacteriaceae and where can it be found in hospitals? - correct answer -
a family of bacteria normally found to colonize intestines
- can be found in aerosolized feces, in hospitals it floats around and found in nasal
cavities of patients
What is the microbiota of the GI tract? - correct answer - colonized with diverse
community of bacteria
- mouth
- nothing in esophagus
- highest number of microorganisms found in large intestine
2026) Practical Review Questions with
Complete Solutions {Grade A}
How many bacteria live on us humans? - correct answer 1x10^15
What precent of our genome is composed of human endogenous retrovirus? - correct
answer 8%
What are the possible outcomes of interacting with a microorganism? - correct
answer - Transiently colonization
- permanent colonization
Transiently colonization? - correct answer does not become a permeant part of your
microbiome, it goes away
Permanent colonization? - correct answer microorganism you come into contact with
becomes a permanent resident of your body
What is disease? - correct answer when human microbiome interactions leads to
damage of the host and interruption of normal function
Where does majority of disease occur? - correct answer epithelial tissue
, BMS 504 Exam 4 (latest update 2025-
2026) Practical Review Questions with
Complete Solutions {Grade A}
What are epithelial tissues? - correct answer tissue located on the outside of
organism (our skin)
What characteristics do animals provide as a favorable environment for
microorganism growth? - correct answer - temperature is consistent
- pH in neutral range
- regular supply of nutrients for growth
What is microbiome referred to s sometimes? - correct answer "normal flora"
what is dysbiosis - correct answer changes in your microbiome tat lead to disease
What are the normal flora relationships? - correct answer - commensalism
- mutualism
What is commensalism? - correct answer - host human provides benefit to bacteria
but bacteria do not provide any benefit to host
What is mutualism? - correct answer - both bacteria and host benefit from
colonization
, BMS 504 Exam 4 (latest update 2025-
2026) Practical Review Questions with
Complete Solutions {Grade A}
What are core regions of the microbiome? - correct answer - skin
- upper respiratory tract
- gastrointestinal tract
- genituorinary tract
FIX What's involved in the upper respiratory tract? - correct answer - bacteria here are
usually non pathogenic
- nasal cavity - staphyloccocus sp
- throat - streptococci
- oropharynx contains anaerobic microbes = actinomyces, fusobacterium, Neisseria
What is Enterobacteriaceae and where can it be found in hospitals? - correct answer -
a family of bacteria normally found to colonize intestines
- can be found in aerosolized feces, in hospitals it floats around and found in nasal
cavities of patients
What is the microbiota of the GI tract? - correct answer - colonized with diverse
community of bacteria
- mouth
- nothing in esophagus
- highest number of microorganisms found in large intestine
