Microbial Growth & Nutrition Quiz
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Microbial growth is
A. Increase in cell size, not number of cells
B. Increase in number of cells, not cell size
C. technique used to grow microorganisms or cells in lab
D. rate of cell death exceeds the rate of cell division
Microorganism that requires light energy and gains nutrients via catabolism of organic compounds (fats, carbs, proteins)
A. photoautotrophs
B. chemoautotrophs
C. photoheterotrophs
D. chemoheterotrophs
Which microbes use inorganic compounds for energy (sodium, magnesium, oxygen etc.)?
A. photoheterotrophs and chemoheterotrophs
B. photoautotrophs and chemoautotrophs
What is the effect of hypotonic solution to bacterial cell?
A. shrink
B. burst
C. nothing
Bacteria that are able to get their carbon source from organic compounds (carbs, fats, proteins)are called?
A. Autotrophs
B. Heterotrophs
C. Chemotrophs
D. Saprophytes
When a cell is placed in a hypertonic environment, water
A. moves out of the cell.
B. moves into the cell.
C. does not move into or out of the cell.
D. is not affected by this.
Which microbes use Carbon as a source of energy?
A. photoheterotrophs and photoautotrophs
B. chemoheterotrophs and chemoautotrophs
Which microbes use organic compounds for energy (fats, proteins and carbs)?
A. photoautotrophs and chemoautotrophs
B. chemoheterotrophs and photoheterotrophs
The chemical growth requirements essential for bacterial growth are …?
A. Water,carbon,Nitrogen & sulphur
B. Water
C. Water, carbon, oxygen, phosphorus, Nitrogen, sulfur and other trace elements
D. Environmental waste
growth occurs in high concentrations of oxygen (top of tube)
A. obligate aerobes
B. facultative anaerobes
C. obligate anaerobes
D. anaerobes
Microorganisms that take up carbon (a chemical) from their organic energy source (fats, carbs, proteins).
A. Chemoautotrophs
B. Heterotrophs
C. Chemoheterotrophs
D. Photoautotrophs
Which term best describes a bacteria that can’t exist in the presence of oxygen?
A. Obligate aerobe
B. Facultative aerobe
C. Obligate anaerobe
D. Facultative anaerobe
E. Microaerophlile
Which group of organisms will use/ prefers oxygen if it is present, but can survive without it?
A. obligate aerobe
B. obligate anaerobe
C. facultative anaerobe
D. aerotolerant anaerobe
Microbes that grow better without oxygen, but grow slowly when in the presence of oxygen.
A. obligate anaerobe
B. obligate aerobe
C. aerotolerant anaerobes
D. facultative anaerobes
Bacteria that obtain their carbon source from carbon dioxide (inorganic compounds) are called?
A. Chemotrophs
B. Autotrophs
C. Heterotrophs
D. Saprophytes
