問題一覧
1
Bacteria that have an optimum growth temperature of about 37°C are known as
Mesophiles
2
Bacteria that have an optimum growth temperature of about 80°C are known as
Hyperthermophiles
3
Bacteria that have an optimum growth temperature of about 60°C are known as
Thermophiles
4
Why can you store honey at room temperature?
High osmotic pressure acts as a preservative
5
An organism that can use oxygen for cellular respiration or can grow without oxygen by switching to fermentation is
A facultative anaerobe
6
An organism that requires oxygen at levels below that found in the atmosphere is
A microaerophile
7
An organism that must have oxygen to live is
An obligate aerobe
8
An organism that can't tolerate any level of oxygen is
An obligate anaerobe
9
An organism that doesn't use oxygen but can tolerate it is
An aerotolerant anaerobe
10
Culture media provide bacteria with
Nutrients
11
The two basic kinds of media used in the lab are
Solid and broth
12
Media that has a component to chemically remove molecular oxygen (02) that might interfere with the growth of anaerobes is
Reducing media
13
Media that inhibits the growth of certain bacteria while allowing other types of bacteria to grow is
Selective
14
Media for fastidious organisms
Enrichment
15
A streak plate is made to
Isolate pure cultures
16
The phase of bacterial growth best defined by equilibrium between cell division and cell death is
Stationary phase
17
The phase of bacterial growth in which there is no increase in number and presumably no cell death is
Lag phase
18
The phase of bacterial growth in which cell number is increasing most rapidly is
Log phase
19
The phase of bacterial growth in which nutrients have been used up and waste products accumulated to toxic levels is
Death phase
20
The phase of bacterial growth in which bacteria are more sensitive to chemical agents of growth control is
Log phase