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18 Cards in this Set

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What are the 6 NUTRIENTS required for BACTERIAL GROWTH
CARBON
NITROGEN
SULFUR
PHOSPHORUS
TRACE ELEMENTS (iron,copper,Manganese,Zinc)
ORGANIC GROWTH FACTORS
(vitamins,B1 B2, folic acid)
Why is WATER necessary for BACTERIAL GROWTH
enzymes catalized metabolic reactiions
Why is OXYGEN required for BACTERIAL GROWTH
Cellular resperation
When and why is OXYGEN TOXIC to some organisms
Some organisums will produce free radicals which kills the organisum
PHYSICAL requirements for BACTERIAL GROWTH
PH....6.5-7.5
Temperature(minimum,maximum,optimal)
Osmotic pressure
What effects OSMOTIC PRESSURE
SALTS or SUGARS or SOLUTES in the cells enviroment
Difference between chemically-defined and complex media
chemically-each batch needs to be the same

complex-media may not be the same every time, may have unknowns in it
why are selective and differential media used
SELECTIVE media contains ingredients that inhibit the growth of certian bacteria while allowing other to grow

DIFFERENTIAL media allows for easyer identification of multiple organisms
name a Differential medium
MacConkey Agar
name a Selective medium
Mannitol Salt Agar
what are the 4 stages of bacterial growth
Lag (most active)
Log (expontially)
Stationary
Death
What is a energy source for growth
carbs (fat,sugars)
name source and use for CARBON
source- herotrophs & autotrophs

use- to make own molocules
what is the source and use for NITROGEN
source- decomposing protein

use- to make own protein & N. A.
what is the source and use for SULFUR
source- proteins & amino acids
what is the source and use for PHOSPHORUS
source- phosphate

use- to make phospholipids
what is the source and use for TRACE ELEMENTS
source- tap water

use- to activate enzymes
what is the source and use of VITAMINS
source- enzyme co-factors,host,created in lab

use- promote enzyme activity