Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
MCB-Growth
PBSC-MCB- Microbial Growth
| Question | Answer |
|---|---|
| These microbes can grow in a high salt concentration in their environment, but it is not required. | Facultative Halophiles |
| This enzyme works on hydrogen peroxide (the peroxide anion) to change it to water. | Peroxidase |
| These anaerobes do not use oxygen, but can tolerate it and still be able to grow. | Aerotolerant Anaerobes |
| These organisms require oxygen in small amounts for growth. | Microaerophiles |
| Self feeders which get their energy from the sun and their carbon from carbon dioxide. | Photosynthetic Autotrophs |
| These microbes prefer a high salt concentration in their environment. | Extreme Halophiles |
| A relationship between two organisms where one benefits and the other is unaffected by the relationship. | Commensalism |
| This is the enzyme that works on the superoxide radical to change it to hydrogen peroxide and oxygen. | Superoxide Dismutase |
| Preferred temperature range of these microbes is 20-30 degrees C, which is perfect for your refrigerator. | Psychrotrophs |
| These organisms cannot grow in the presence of oxygen. | Obligate Anaerobes |
| When two organisms in live close relationship. | Symbiosis |
| A device which measures direct microscopic count by using a specialized slide. (Measures both dead and live cells - disadvantage.) | Petroff-Hausser cell counter |
| E.coli in the human intestine produce _______ which inhibit the growth of Salmonella and Shigella. | Bacteriocins |
| The portion of the phase of growth in bacteria where there is no obvious change in number. | Lag Phase |
| These organisms can use oxygen, but can switch to fermentation in the absence of oxygen. | Facultative Anaerobes |
| Preferred temperature range of these microbes is 0-15 degrees C. | Psychrophiles |
| The portion of the phase of growth in bacteria where cell death and new cell production are about equal. | Stationary |
| The portion of the phase of growth in bacteria where there is a logarithmic increase in cell number. | Exponential Growth (Log) |
| A relationship between two organisms where one benefits and the other is harmed by the relationship. | Parasitism |
| The time required for the number of cells to double. | Generation Time |
| These microbes must have a high salt concentration in their environment. | Obligate Halophiles |
| A relationship between two organisms where both benefit from the relationship. | Mutualism |
| Preferred temperature range of these microbes is your body temperature, 37 degrees C. | Mesophiles |
| Preferred temperature range of these microbes is 50-60 degrees C. | Thermophiles |
| The portion of the phase of growth in bacteria where the cell death exceeds new cell growth. | Death Phase |
| Preferred temperature range of these microbes is 80-110 degrees C. | Extreme Thermophiles |
| These microbes grow best at a pH less than 4. | Acidophiles |
| Self feeders which get their energy from stripping electrons from inorganic compounds such as sulfates and nitrates. | Chemosynthetic autotrophs |
| These organisms must have oxygen for growth. | Obligate Aerobes |
| A type of cell measurement which involves serial dilutions and measures viable cells. | Plate Counts |
| Organisms that get their energy from compounds assembled by other living things. | Heterotrophs |
| A method to estimate the cell number by measuring optical density with a spectrophotometer. | Turbidity |
| This enzyme works on hydrogen peroxide (the peroxide anion) to change it to water and oxygen. | Catalase |
Created by:
callen-pbsc
Popular Biology sets