Oral ecology

Question 1

What is the human microbiome?

Answer 1

The full array of microorganisms (the microbiota) that live on and in humans

Question 2

What is a microbe?

Answer 2

Tiny living organism, such as bacterium, fungus, protozoan or virus

Question 3

What is a microbiome?

Answer 3

• Collectively all the microbes in the human body; a community of microbes

Question 4

What is a biofilm?

Answer 4

A commnity of microbes that live together on a surface

Question 5

Microbes are ubiquitous. What does this mean?

Answer 5

They are found everywhere

Question 6

Some microbes are native, what does this mean?

Answer 6

They are normally found in the body

Question 7

Some microbes are introduced. What does this mean?

Answer 7

They suddely arrive at a new residence in the body

Question 8

We can pick up microbes over our life. Give a few examples of when we can pick up microbes?

Answer 8

• When delivered as a baby (mode of delivery)
• Breast feeding
• Geographical location
• Family members

Question 9

What are the benefits of normal flora? (5 points)

Answer 9

1. Synthesize and excrete vitamins
2. Prevent colonization by pathogens
3. May antagonize other bacteria
4. Stimulate the development of certain tissues
5. Stimulate the production of cross-reactive antibodies

Question 10

What is the germ theory of disease: Koch’s Postulates? (4 points)

Answer 10

• The microbe must be present in every case of the disease
• The microbe must be isolated from the diseased host and grown in pure culture
• The disease must be reproduces when a pure culture is introduced into a susceptible host
• The microbe must be recovered from an experimentally infected host

Question 11

Look over lecture

Answer 11

:)