Exam 1- impact of microbes

Question 1

what qualifies as a microbe?

Answer 1

-so small it cannot be seen by the naked eye
-single celled organism

Question 2

what is microbial antagonism?

Answer 2

-The inhibition of one bacterial organism by another. Through microbial antagonism, the normal bacterial flora of the body provides some defense against disease-causing organisms. (opportunistic pathogens)

Question 3

Impacts of microorganisms:

Answer 3

1. teach us basic biology-metabolism, react to stimuli, structure of cells, etc.
2. can cause disease
   3.make and spoil foods
   4.recycling
   5.microbes are everywhere

Question 4

why do we study basic biology with microbes?

Answer 4

easy to study, and manipulate

Question 5

what kills all bacteria including drug resistant bacteria?

Answer 5

tricolsan

Question 6

difference between normal and transient microbiota?

Answer 6

The normal microbiota consists of microorganisms that constantly live in or on our bodies (not central nervous system, blood, or the bladder). The term transient microbiota refers to microorganisms that are only temporarily found in the human body and do not colonize, and these may include pathogenic microorganisms.

Question 7

what is the human microbiome?

Answer 7

cataloging of normal microbes in the body

Question 8

what is a pathogen?

Answer 8

an organism that causes disease, an organism that does not have a binding agreement with you as the host

Question 9

what does virulence measure?

Answer 9

pathogenisy (avirulent + virulent)

Question 10

what is an opportunistic pathogen?

Answer 10

normal microbiota that can overgrow and lead to infection and disease if given the opportunity

Question 11

levels of pathogens

Answer 11

1.colonize (grow)
2.infect (overgrow)
3.disease (effect of infection)

Question 12

what does systemic mean?

Answer 12

all over

Question 13

What does localize mean?

Answer 13

stayed in one place

Question 14

what does dissemination mean?

Answer 14

spreads

Question 15

what is a nosocomial pathogen?

Answer 15

a hospital acquired pathogen

Question 16

What is bacteremia?

Answer 16

bacteria in the bloodstream

Question 17

What is septicemia?

Answer 17

Potentially pathogenic bacteria in the bloodstream

Question 18

What is toxemia?

Answer 18

toxin in the bloodstream

Question 19

What is viremia?

Answer 19

virus particles in the bloodstream

Question 20

What is Fungemia?

Answer 20

Fungi in the bloodstream

Question 21

what is mycorrhizae?

Answer 21

on the roots of most plants, help with nitrogen fixation and water absorbtion

Question 22

what is decomposition?

Answer 22

the natural form of recycling of organic and inorganic materials to elemental forms

Question 23

what is biodegration?

Answer 23

synthetic form of recycling using organisms