6. Compound Formula Oxidation state
Sulfate SO4
2- +6
Sulfite S03
2- +4
Thiosulfate S2O3
2- +2
sulfur S 0
sulfide S2- -2
cysteine HOOC-CH(NH2)-CH2SH -2
7. Euglenids:
Member of the protist phylum Euglenophyta,
comprising unicellular organisms, either green and
photosynthetic or colorless and nonphotosynthetic.
Prototroph:
Organism that can synthesize organic compound for
their growth.
Auxotroph:
Organism that cannot synthesize certain substances
such as lysine, which is required for growth and
metabolism due to mutational changes.
Metazoa:
A zoological group comprising the multicellular
animals.