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20 Cards in this Set

  • Front
  • Back
to synthesize organic components
energy source
needed for living processes which require energy
for synthesis of proteins and nucleic acid
for synthesis of phospholipids and nucleic acids
for synthesis of some proteins
trace elements
boron, nickel, copper, zinc, colbalt,
and more their
function is many are cofactors for enzymes.
function is: 1.comprises 80% of cytoplasm 2.solvent and suspending agent 3.required for chemical reactions
list 5 elements that microbes require in moderate amounts.
scimp: sodium, calcium, iron, magnesium, potassium.
self nurishers they can live on CO2 from the air if they need to because CO2 is all they require.
these are organic they require 1 or more organic molecues for carbon source.
describe each of the terms and identify each of the microbes found in each: five: chemotroph
oxidize inorganic or organic molecules for energy source
use light as energy source
iron bacteria, and nitrogen bacteria in soil: Use CO2 as carbon source and oxidize inorganic molecules for energy.
most bacteria, fungi, and protozoa: Use organic molecules as carbon source and oxidize organic molecules for energy
purple nonsulfur bacteria: require one or more organic molecules as carbon source. Light is energy source
describe the content and use of the next: five:
chimically defined media
exact composition is known: example:glucose agar: most nutrients supplied as salts and provide minimal nutritional requirements for some microbes.
complex media
contain one or more complex nutrients such as peptone or protein:example: nutient agar: USE: to cultivate different microbes that need nutrient agar with combined nutrients.
selective media
contains chemicals that inhibit some groups while permitting others to grow: example: MacConkey agar: USE: to seperate some microbes from others.
differential media
contains carbohydrate and ph indicator.example: EMB agar; USE:allows visible distinction of different groups.
enriched media
contains complex medium plus plant or animal extract example: blood agar USE: to cultivate fastidious heterotrophs which have complex nutritional requirements