Microbiology: Human Exposure to Microbes

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What is the primary site of permanent microbe residence in the human body?

Kidneys

Brain

Skin (correct)

Liver

What is an example of how postnatal exposure to different sources of flora can influence health and development?

Caesarean section instead of normal birth (correct)

Prolonged exposure to sunlight

Consuming probiotics

Regular exercise

What is an example of a systemic body function that is influenced by gut microbe-mediated developmental outcomes?

Spleen development (correct)

Pancreas function

Heart rate regulation

Lung function

What is the term for an interaction where one organism is inhibited and the other is not affected?

Amensal Signup and view all the answers

Why do germ-free mice models have defective spleen cells?

Due to lack of gut microbiota Signup and view all the answers

What is the term for an interaction where both organisms benefit?

Mutualist Signup and view all the answers

What is the primary characteristic of a parasitic relationship?

One side benefits at the other’s expense Signup and view all the answers

What is the estimated number of bacteria in the human colon?

10^11 to 10^12 Signup and view all the answers

What is the primary function of bacteroides and firmicutes in the gut?

Consuming polysaccharides and performing fermentative metabolism Signup and view all the answers

What is the consequence of a lack of gut microflora on the enteric nervous system?

Underdeveloped enteric nervous system Signup and view all the answers

What percentage of microbial cells in the human body are bacteria?

98% Signup and view all the answers

What is the term for the relationship between two organisms where one benefits and the other is not affected?

Commensalism Signup and view all the answers

Microbiology: Human Exposure to Microbes

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Questions and Answers

What is the primary site of permanent microbe residence in the human body?

What is an example of how postnatal exposure to different sources of flora can influence health and development?

What is an example of a systemic body function that is influenced by gut microbe-mediated developmental outcomes?

What is the term for an interaction where one organism is inhibited and the other is not affected?

Why do germ-free mice models have defective spleen cells?

What is the term for an interaction where both organisms benefit?

What is the primary characteristic of a parasitic relationship?

What is the estimated number of bacteria in the human colon?

What is the primary function of bacteroides and firmicutes in the gut?

What is the consequence of a lack of gut microflora on the enteric nervous system?

What percentage of microbial cells in the human body are bacteria?

What is the term for the relationship between two organisms where one benefits and the other is not affected?

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