Micro 7 (Test 2) Flashcards
Which of the following are physical conditions for bacterial growth?
pH, gas requirements, temperature, grams of salt.
At an ideal temperature, the _____ function is most efficient.
enzyme
_____ are bacteria that have an optimal temperature of 15 degrees Celsius and are considered as “cold living”.
psychrophils
_____ have an optimum growth temperature of 37 degrees Celsius.
mesophils
_____ have an optimum growth temperature of 52 degrees Celsius.
thermophils
_____ bacteria need molecular oxygen.
aerobic
_____ bacteria cannot use oxygen and oxygen is toxic to them.
anaerobic
_____ _____ bacteria would prefer the absence of oxygen but can grow slowly in the presence of it.
facultative anarobic
_____ require very high concentrations of salt in order to metabolize.
extreme/obligate halophiles
A bacterial medium that is stored in a test tube is a:
deep
If a bacterial medium had crystal violet added to it, would the crytal violet enhance or prevent growth of the G (+) bacteria?
Prevent
When one living item lives inside another living item that both derive benefits from one another, it is called a _____ _____
symbiotic relationship
The state of suspended animation is called _____
senescence
A basic medium contains these ingredients to promote bacterial growth: (7)
- Oxygen and hydrogen 2. Nitrogen 3. Water 4. Carbon 5. Protein *6. Minerals *7. Vitamins **not necessary in simple/growth medium
What are three forms of a solid media?
DEEP for motility test
SLANT is in a tube and has an increased surface area for inoculation.
PLATE is in a petri dish
