Introduction Flashcards

1
Q

the study of microbes(microscopic organisms) that includes bacteria, fungi, and viruses

A

microbiology

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2
Q

the study of bacteria

A

bacteriology

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3
Q

typically involves medically important taxa

A

bacteriolgoy

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4
Q

what is the plague

A

yersinia

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5
Q

what is gene bacteria

A

agrobacterium

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6
Q

when did the birth of microbiology start

A

with the start of microscopes

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7
Q

who observed bacteria and animalcules and is noted as the father of microscopy

A

Leeuwenhoek

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8
Q

was Leeuwenhoek the first to use a microscope

A

no but his had the best magnification

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9
Q

what was the period of new expansion in microbiology called from 1857-1911

A

golden age of microbiolgy

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10
Q

the study of an organism’s genes, this provided new tools for classifying microorganisms

A

genomics

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11
Q

what did Carl Woese do

A

in the 1970s used nRNA to elucidate bacterial phylogenies
these describe Archaea
revolutionized bacterial biodiversity

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12
Q

what is DNA made from two different sources

A

recombinant DNA

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13
Q

what does recombinant DNA do

A

enables bacteria and fungi to produce a variety of proteins(including vaccines and enzymes)

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14
Q

missing or defective genes in human cells can be replaced in what

A

gene therapy

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15
Q

what are used to protect crops from insects and from freezing

A

genetically modified bacteria

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16
Q

who produced animal protein in 1960s

A

Paul Berg

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17
Q

are microbes pathogenic

A

no, very few are disease causing

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18
Q

do microbes decompose organic waste

A

yes

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19
Q

how are microbes producers in ecosystems

A

via photosynthesis

20
Q

do microbes produce industrial chemicals

A

yes for example, ethanol and acetone

21
Q

do microbes produce fermented foods

A

yes for example, vinegar, cheese, and chocolate

22
Q

what are examples of products in manufacturing and treatment that microbes produce

A

manufacturing: celluase and treatment:insulin

23
Q

this is the use of microbes to produce foods and chemicals

A

biotechnolgy

24
Q

what is an example of an every day item that has been affected by microbes

25
this is used to answer questions in a rigorous, repeatable way
scientific method
26
idea or concept that can be tested by experimentation
hypothesis
27
what are the five steps of the scientific method
1)identify the problem/question 2)develop a testable hypothesis 3)select info needed to test hypothesis 4)collect info 5) analyze info
28
what happens if the hypothesis is rejected
go back to step two and develop a new hypothesis
29
what happens if the hypothesis is accepted
experimental verification and modify hypothesis
30
how are hypotheses changed
modified over time
31
a set of propositions and concepts that provides a reliable systematic and rigorous account of some aspect of nature
theory
32
what are NEVER completely proven
theories
33
living cells can only arise from ______________
preexisting cells
34
who believed in the vital essences of living creatures and spontaneous generation
Aristotle (384-322 BCE)
35
what is the idea that organisms can arise from non living matter
spontaneous generation
36
who set out meat containers in the 1600s in attempt to disprove spontaneous generation
Francesco Redi
37
what was the impact of Leeuwenhoek and Redi
``` People were aware of microscopic animalcules Macroscopic organisms(flies) no longer believed in spontaneous generation ```
38
who boiled mutton broth and sealed after boiling(turned cloudy) in 1713-81
John Needham
39
what did John Needham determine
organic matter contains vital force
40
who repeated experiments but boiled longer and sealed flasks by melting necks(broth never turned cloudy)
Lazzaro Spallanzani (1729-99)
41
how did supporters of spontaneous generation undermine Spallanzani
said fresh air was necessary for spontaneous generation to occur (he was boiling in sealed flask)
42
who was a French physician and botanist that filtered air through sterile cotton and discovered objects resembling plant spores
Louis Pasteur (1822-95)
43
what did Pasteur conclude
it is organic structures that cause growth
44
what was Pasteur's second experiment
placed nutrient in flask, heated necks and drew into curves, boiled solutions (result was no growth)
45
why did no growth occur in original flask of Pasteur's experiment
bacteria was trapped in neck of flask
46
who concluded that different infusions require different times and attributed contamination to heat resistant life form
John Tyndall
47
who discovered endospores
Ferdinand Cohn