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Flashcards in Terms Deck (23):
1

microbiology

study of microorganisms

2

microbiota or natural flora

the organisms that live on and in us

3

decomposers

recycle nutrients from dead organisms

4

pathogens

disease causing organisms

5

mycology

study of fungi

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phycology

study of algea

7

prokaryotic organisms

no true defined nucleus, no membrane bound organelles

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3 basic shapes of prokaryotes

bacillus "rod", spiral, coccus "spherical"

9

archaea

extreme living bacteria, dont cause diseases for us, prokaryotic

10

viruses

not a prokaryote or eukaryote

11

viruses

1) acellular, not really a cell- just peice of nucleic acid with shell
2) DNA or RNA- never both
3) obligate intracellular parasites- must be inside a living cell to replicate, use the machinery of the host cell to make new viral cells

12

Fungi

besides yeast they are all eukaryotic, est 1.5 million but only 70,000 have been identified
-extracellular digestion using powerful enzymes (breaks down what it's living on)- get nutrients by absorption

13

Fungi

detrimental: rise in rate of human fungal infections
Beneficial: antibiotics, flavorings, beer, wine, decomposers

14

Protozoa

1) unicellular eukaryotic organisms - true defined nucleus
2) low level on the food chain

15

miasma

general belief that disease resulted from altered chemical quality of the wair or tiny poisonous particles in the air

16

epidemiology

scientific study from which the source, cause and mode of transmission of disease can be identified

17

1940s and 1950s electron microscope

magnified objects and cells thousands of times better than a typical compound microscope- could now see that bacterial cells were different from plant and animal cells

18

biotechnology

commercial application of genetic engineering using living organisms

19

polymicrobial diseases

variety of diseases can cause- increased antibiotic resistance

20

Emerging infectious disease

AIDS, SARS, Lyme disease

21

Reemerging infectious disease

Chlorea, west nile fever, TB

22

*Reasons for reemberging infectious diseases*

antibiotic resistance, increase in susceptible individuals, climate change

23

bioremediation

the use of microorganism to remove or decontaminate toxic materials in the environment (oil spills, etc)