Bacte Lec - Culture Media Lecture Flashcards
bacterial nutritional requirements (3)
water
energy source
carbon source
types of organisms based on their source of energy
phototrophs
chemotrophs
types of organisms based on their carbon source
heterotroph
autotrophs
types of chemotroph
lithotrophs
organotrophs
types of organisms based on their carbon source
require CO2
autotrophs
types of organisms based on their carbon source
require organic compounds
heterotrophs
types of organisms based on their energy source
require light
phototrophs
types of organisms based on their energy source
require chemicals
chemotrophs
prevention of bacterial growth by water removal
lyophilization
organisms which need co2
capnophiles
examples of capnophiles
Haemophilus influenzae
Neisseria gonorrhoea
energy source: light
C source: CO2
photoautotrophs
energy source: light
C source: organic compounds
photoheterotrophs
energy source: inorganic compounds
C source: CO2
chemoautotrophs
energy source: organic compounds
C source: organic compounds
chemoheterotrophs
photoautotrophs
energy source
light
photoheterotrophs
energy source
light
chemoautotrophs
energy source
inorganic compounds
chemoheterotrophs
energy source
organic compounds
chemoheterotrophs
c source
organic compounds
chemoautotrophs
c source
co2
photoheterotrophs
c source
organic compounds
photoautotrophs
c source
CO2
Representative bacteria of photoautotrophs
cyanobacteria
photosynthetic bacteria
algae
Representative bacteria of photoheterotrophs
photosynthetic bacteria
Representative bacteria of chemoheterotrophs
protozoa, fungi, bacteria
Representative bacteria of chemoautotrophs
sulfur, iron, ammonia oxidizing bacteria
methane producing bacteria
essential elements needed by microorganisms [TOM]
Metals
Trace Elements
Organic Growth Factors
metals needed by microorganisms
K, Mg, Ca, Fe
Trace elements needed by microorganisms
Molybdenum
Copper
Cobalt
Zinc
Organic growth factors
purine and pyrimidine
amino acids
vitamins
elements of culture media [6]
free of inhibitory substances proper ph sufficient moisture desired consistency initially sterile right nutrients
classification of CM according to composition
synthetic, chemically defined
non-synthetic, chemically undefined, complex
classification of CM according to composition
specific substances can be identified
synthetic, chemically defined
examples of synthetic, chemically defined
nutrient agar/broth
classification of CM according to composition
specific substances cannot be identified
non-synthetic, chemically undefined, complex
ex of non-synthetic, chemically undefined, complex
yeast extract, beef extract
digested proteins rich in protens, amino acids, nitrogen and carbon source
peptone
form of dehydrated culture media
granular
powder
glassware for preparation of plated cm
erlenmeyer flask
glassware for preparation of tubed cm
beaker
classification of CM according to physical state
solid
liquid
semi-solid
agar composition in solid cm
1.5 -2 %