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MICR222 > Water Microbiology and public health > Flashcards

Water Microbiology and public health Flashcards

1
Q

Where can freshwater be sourced

A
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2
Q

3 general charcateristics of freshwater environemnts

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3
Q

How does an aquifier form

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4
Q

Describe rivers as a freshwater environment

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5
Q

List some things that can pollute rivers

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6
Q

What is stratificaiton of lakes

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7
Q

What are the 3 factors required for statification to occur in a lake

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8
Q

Name the layers of a stratified lake

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9
Q

Epilminion layer

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10
Q

Hypoliminon layer

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11
Q

Metalimnion layer

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12
Q

How does statification lead to different microbes in the different levels of the lake

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13
Q

Leibigs law of the minimum

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14
Q

Shelfords law of tolerance

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15
Q

What is eutrophication

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16
Q

How does eutrophication change the water envrionment and micorbes in it

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17
Q

Why is eutrophication a bigger problem in lakes than rivers

A
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18
Q

List the adaptations microbes have that allow them to live in aquatic freshwater envrionments

A
  1. small cells
  2. sheathed bacteria
  3. pigment production
  4. motility
  5. magnetotactic bacteria
  6. use nutrience at low conc.
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19
Q

List the 7 features of the marine environment

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20
Q

O2 conc of marine environment

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21
Q

Salt content of marine environmet

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22
Q

hydrostatic pressure in marine environment

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23
Q

Sunlight penentration in marine environment

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24
Q

Temperature in marine environment

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25
Q

pH in marine envrionment

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26
Q

Nutrients in marine environmet

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27
Q

Halotolerant vs halophillic

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28
Q

Piezotolerant vs piezophillic

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29
Q

Additional adaptations marine micorbes have that helps the survive in the harsh ocean conditions

A
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30
Q

List 3 examples of how micorbes have adapted to have symbiotic mutualistic relationships in the marine environmnet

A
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31
Q

Describe what its like near a hydrothermal vent

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32
Q

Symbiotic relationship between tubeworm and bacteria

A
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33
Q

Symbiotic relationship between luminecent bacteria and angler fish

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34
Q

Light emmiting reaction

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35
Q

Symbiotic relationship between tubeworms and bacteria

A
36
Q

What are algal blooms

A
37
Q

What is the main issue of algal blooms

A
38
Q

Draw the waterborn infection cycle

A
39
Q

What phase of the waterborn infection cycle is best to intervein to prevent infection

A
40
Q

Name 1 bacteria, 2 protazoa and 2 viruses that cause gastroentritis

A
41
Q

Describe campylobacter

A
42
Q

Describe a campylobacter infection

A
43
Q

List the reasons that make campylobacter such a good pathogen

A
44
Q

Outline what happend in the havlock north outbreak

A
45
Q

Similarities between the Giradia and cryptosporidium

A
46
Q

Giardia lifecycle

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47
Q

Cryptosporidium lifecycle

A
48
Q

Differences between cryptosporidium and Giardia life cycles

A
49
Q

Norovirus

A
50
Q

Rotavirus

A
51
Q

how much potable water does a person need per day

A
52
Q

List the sources of potable water

A
53
Q

How can a water source become polluted

A
54
Q

Human pollution

A
55
Q

Natural pollution

A
56
Q

List the steps involved in water treatment

A
57
Q

protection of a water source

A
58
Q

Sedimentation

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59
Q

Aeration

A
60
Q

floculation

A
61
Q

filtration

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62
Q

Chloronation

A
63
Q

fluronation

A
64
Q

UV treatment

A
65
Q

List where problems could occur in the water treatment system and delivery of potable water

A
66
Q

Milwaukee cryptosporidium outbreak

A
67
Q

What caused the Milawakie outbreak

A
68
Q

What was done to prevent future outbreaks at Milwalkee

A
69
Q

explain how you would collect a water sample

A
70
Q

BOD

A
71
Q

COD

A
72
Q

Advantages of BOD

A
73
Q
A

Disadvanatges of BOD

74
Q

Advanatges of COD

A
75
Q

Disadvanatges of COD

A
76
Q

relationship between BOD and COD to total organin matter in H2O

A
77
Q

Why not look for pathogesn in a faecal pollution

A
78
Q

Indicator organsim

A
79
Q

features of ideal indicator organism

A
80
Q

Coloforms as indicator organsims

A
81
Q

What are the disadvanatges to using a indicator bacteria

A
82
Q

Clustering of micorbes

A
83
Q

How to test a sample of water using an indicator organsim

A
84
Q

ONPG-MUG test

A
85
Q

Acceptiable levels of bacteria in dinking water nz

A

MICR222 (5 decks)

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