Bacterial growth and control

Question

Which of the following is NOT an environmental parameter that limits bacterial growth?

Answer 1

Temperature

Answer 2

Metabolism

Answer 3

Osmotic pressure

Answer 4

None of the above

Answer 5

Increased number of saturated fatty acids

Answer 6

Short acetyl chains on fatty acids

Answer 7

Increased G-C content

Answer 8

Produces anti-freeze proteins

Answer 9

All of the above

Answer 10

Bind to small ice crystals and prevent cell lysis

Answer 11

Insert into the plasma membrane to make it more fluid

Answer 12

A good example is Trehalose and exopolysaccharides

Answer 13

All of the answers

Answer 14

Potassium ions

Answer 15

Sodium ions

Answer 16

Calcium Chloride

Answer 17

An bacterium that thrives in hot temperatures

Answer 18

A thermostable protein

Answer 19

A chaperonin protein complex

Answer 20

A glycerol tetraether

Answer 21

Release solutes through mechanosensitive channels

Answer 22

Stabilisation of S-layer glycoproteins with sodium ions

Answer 23

Production of compatible solutes inside the cell

Answer 24

Modification of mitochondrial metabolism

Answer 25

Peroxidase

Answer 26

Superoxidase dismutase + catalase

Answer 27

Superoxidase dismutase + superoxidase reductase

Answer 28

Facultative aerobes

Answer 29

Obligate aerobes

Answer 30

Obligate anaerobes

Answer 31

Aerotolerant aerobes

Answer 32

Microaerophiles

Answer 33

Flow cytometry

Answer 34

Viable counting

Answer 35

Petroff-Hauser cell counting

Answer 36

Optical density

Answer 37

Log phase --> stationary phase --> lag phase --> death phase

Answer 38

Log phase --> lag phase --> death phase -->stationary phase

Answer 39

lag phase --> log phase --> death phase -->stationary phase

Answer 40

lag phase --> log phase -->stationary phase -->death phase

Answer 41

Minimal temperature at which all organisms are killed in 10 min in a particular liquid

Answer 42

Minimal temperature at which all organisms are killed in 1 hour in a particular liquid

Answer 43

Minimum time taken to kill all organisms at particular temperature in a given liquid

Answer 44

Minimal temperature at which all organisms are killed in 10 min in water

Answer 45

121 degrees celcius

Answer 46

150 degrees celcius

Answer 47

70 degrees celcius

Answer 48

100 degrees celcius

Answer 49

By breaking the DNA into fragments

Answer 50

By creating reactive oxygen species

Answer 51

By lysing the cell membranes

Answer 52

By mutating the DNA

Answer 53

Image:

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Answer 54

Image:

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Answer 55

Image:

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Answer 56

Disinfectants

Answer 57

Sterilants

Answer 58

Antiseptics

Answer 59

Germicides

Answer 60

Antiseptics

Answer 61

Disinfectants

Answer 62

Sterilants

Answer 63

Minimum inhibitory concentration

Answer 64

Minimum bactericidal concentration

Answer 65

The lowest concentration of a drug killing >99.9% of a test organism after overnight incubation.

Answer 66

The lowest concentration of a drug inhibiting the visible growth of a test organism after overnight incubation.

Answer 67

The lowest concentration of a drug killing >99.9% of a test organism after 48 hours of incubation.

Answer 68

The highest concentration of a drug killing >99.9% of a test organism after 48 hours of incubation.

Answer 69

Phenolic compounds

Answer 70

Quaternary ammonium compounds

Answer 71

Halogen releasing agents

Answer 72

Iodine-releasing

Answer 73

Chlorine-releasing

Answer 74

Bromine-releasing

Answer 75

Fluorine-releasing

Answer 76

They often stain

Answer 77

They are toxic at high concentrations

Answer 78

They act as a local anesthetic at low concentrations

Answer 79

They form chlorinated bases in DNA

Answer 80

Louis Pasteur

Answer 81

Robert Koch

Answer 82

Rudolf Emmerich and Oscar Loew

Answer 83

Paul Ehrlich

Answer 84

The microorganism must be found in all organisms suffering from the disease, and in healthy organisms.

Answer 85

The microorganism must be re isolated from the inoculated, diseased experimental host and identified as being identical to the original specific causative agent.

Answer 86

The cultured microorganism should cause disease when introduced into an immunocompromised organism.

Answer 87

The microorganism must be isolated from a diseased organism and grown in pure culture.

Answer 88

Rudolph Emmerich & Oscar Loew

Answer 89

Paul Ehrlich

Answer 90

Alexander Fleming

Answer 91

Gerhard Domagk

Answer 92

Protein synthesis

Answer 93

DNA gyrase

Answer 94

Cell wall synthesis

Answer 95

Folic acid metabolism

Answer 96

14 billion

Answer 97

14 million

Answer 98

1.7 billion

Answer 99

1.7 million

Answer 100

Farming industry

Answer 101

Agriculture

Answer 102

Aquaculture

Answer 103

Human misuse

Answer 104

Non-toxic/inert

Answer 105

Cheap (relatively)

Answer 106

selectively distrubuted

Answer 107

Covalently bind murNAc and glcNAc together

Answer 108

Catalyses the formation of cross-links between D-ala side chains

Answer 109

Inhibit peptide binding proteins

Answer 110

Bind to the beta-lactam ring of beta-lactam antibiotics

Answer 111

Change in Pencillin Binding protein pathway

Answer 112

Modification of beta-lactam molecules

Answer 113

The binding of beta-lactamases to beta lactams using a catalytic serine

Answer 114

Mutation of PBPs

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Bacterial growth and control

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	Criado por Beth Moore quase 9 anos atrás