Term
| What is microbial growth? |
|
Definition
| Increase in cell #s leading to increase in size of population |
|
|
Term
| by what process do bacteria grow? |
|
Definition
|
|
Term
| what are the steps to binary fission? |
|
Definition
1. everything is duplicated
2. septum is formed
3. cell splits |
|
|
Term
| what is another term for generation time and what is it? |
|
Definition
| doubling time, time it takes for a bacterial cell to double in number |
|
|
Term
| what factors affect doubling time? |
|
Definition
| nutritional and environmental |
|
|
Term
| what are the 4 phases of bacterial growth? |
|
Definition
1. lag phase
2. log phase
3. stationary phase
4. death phase |
|
|
Term
|
Definition
| no growth. this is because bacteria must adjust to new surroundings (temp, pH, nutrition) and make new enzymes. length varies. |
|
|
Term
|
Definition
| actively multiplying. most susceptible to antibiotics in this phase because targets are actively multiplying. |
|
|
Term
|
Definition
| net growth = 0. rate of growth=rate of death. accumulation of toxic products/run out of nutrients. |
|
|
Term
|
Definition
|
|
Term
|
Definition
Cu Zn Co Mo
act as cofactors in enzymes |
|
|
Term
|
Definition
| cannot make its own vitamins, require complex environments |
|
|
Term
| photoautotroph E and C source |
|
Definition
|
|
Term
|
Definition
|
|
Term
| chemoautotroph (chemolithiotroph) |
|
Definition
E=inorganic compounds
C=CO2 |
|
|
Term
| chemoheterotrophs (chemoorganotrophs) |
|
Definition
E=organic compounds
C=organic compounds |
|
|
Term
|
Definition
| can tolerate high salt concentration, not required however |
|
|
Term
|
Definition
| requires high salt concentration |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| grow in O2 or lack of O2, will always prefer O2 |
|
|
Term
|
Definition
| require O2 in small quantity |
|
|
Term
|
Definition
| does not use O2, but can grow in presance |
|
|
Term
| what type of bacteria is acid resistant? |
|
Definition
|
|
