Exam (elaborations)
CMB Lab Quiz #3 Questions with verified correct answers - complete solution 2024
- Module
- CMD 160 / CMB LAB
- Institution
- CMD 160 / CMB LAB
CMB Lab Quiz #3 Questions with verified correct answers - complete solution 2024
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CMB Lab Quiz #3Enumeration of Live Bacteria - ✅✅-the method we completed by diluting a bacteria
culture and plating the dilutions
Why do we enumerate bacteria? - ✅✅-to find the original concentration of the
bacteria
Between what numbers do we consider "countable" for colonies? - ✅✅-Between
25 and 250
DNA - ✅✅-The unique genetic sequence of an organisms make-up
Phenotype - ✅✅-An organism's physical appearance, or visible traits.
Genotype - ✅✅-genetic makeup of an organism
Can genotype change? - ✅✅-NO
Mutation - ✅✅-heritable change in DNA
wild type bacteria - ✅✅-bacteria without mutation
spontaneous mutations - ✅✅-caused by copy errors in cell division
induced mutations - ✅✅-caused by exposure to a mutagen
Bacteriostasis - ✅✅-the inhibition of bacteria without killing them
Bacteriostactics - ✅✅-- agents that will stop the growth of SOME bacteria
- crystal violet is the agent used in class
✅✅-agents that kill bacteria
Bactericidals -
Two examples of bactericidals? - ✅✅-disinfectants and antiseptics
The Oligodynamic Effect - ✅✅-the ability of trace amounts of metals to inhibit
growth or kill some bacteria
when is ethanol most effective? - ✅✅-concentrations below 50% and higher than
90%
Antibiosis and an example of it - ✅✅-the harmful effect of one microorganism on
another
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