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15 Cards in this Set

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need for macroelements
carbon, nitrogen, oxygen, sulfer, phosphorous, calcium, mg, na, k
Need for microelements
mn, zn, cu, co
Autotrophs(nutrients)
can use CO2 as a source of carbon-->plants and bacteria
Heterotrophs(nutrients)
require reduced organic material as a source of carbon.-->humans
phototrophs(energy)
use light as a source of energy.-->plants
Chemotrophs
may use organic or inorganic compound for energy.-->fish at bottom.
Photolithoautotrophs
Energy: light
Carbon: light
Inorganic H/e- donors
ex. purple green sulfur bacteria.
photoorganohetero
energy:light
carbon:organic
Organic H/e- donors
Ex. purple green non-sulfur bacteria.
chemolithoautotroph
energy:some chemical that is non light
Carbon: CO2
Inorganic H/e- donor
ex. hydrogen bacteria
chemoorganohetero
energy:some chemical
Carbon: organic
organic H/e- donors
Ex. E.coli
Mixatrophs
can carry out a combination of heterotrophic and lithotrophic depending on their environment.
ex. Beggiatoa Sp
Why Carbon
1)for energy(catabolism-ulilize to break down)
2) Carbon Skeletons (precursors)
why nitrogen
1)proteins-amino acids
2)Nucleic Acids(purines/pyrimidines)
why phosphorous
1)nucleic acids
2)Nucleotides(ATP/GTP)
Why Sulfur
amino acids(cysteine/methionine)