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Property Organism Value Units ID Details
Number of intestinal microbe species Human Homo sapiens 400 - 500 microbial species 117016 Breitbart M et al., ...
Virus to microbe ratio (VMR) in Pacific and Atlantic coral reef samples Biosphere 25 - 2 VLPs (virus-like particles) per microbe 114001 Knowles B et al., Lytic...
Volume of water explored by a microbe randomly swimming at 50 µm/s Microbes 0.5 µl (a ~0.8mm cube) of new water every 10 min and 0.8 ml (a ~1 cm cube) every day N/A 110353 Stocker R. Marine microbes...
Net displacement of microbe that is the result of chemotactic velocity (the directional component of swimming) of 10 µm/s Microbes 6 mm in 10 min N/A 110354 Stocker R. Marine microbes...
Overall composition of an average E. coli cell conditions of growth unknown Bacteria Escherichia coli Table - link N/A 106270 Moselio Schaechter, John...
Number of intact bacteria in drinking water in Beijing (article published in 2016) bacteria 2200-16000 intact cells/ml 114121 Liu et al., Bacterial...
Energy and reducing power used in making macromolecules Unspecified Table - link N/A 106271 Moselio Schaechter, John...
Fraction of cell membrane that is made of proteins by mass bacteria 70 % 106255 Moselio Schaechter, John...
Number of different kinds of proteins in cell membrane bacteria >=200 Unitless 106256 Moselio Schaechter, John...
Number of microbial cells in human body Human Homo sapiens 10^14 (see BNID 113000 for more updated value of 3.8x10^13) microbial cells (mostly bacteria)/human body 102392 Savage DC. Microbial...
Composition of rumen microbiome Cow Bos Taurus prokaryotes 454: protozoa 12: fungi 46 species 117086 Wallace RJ et al., A...
Fraction of rumen microbiome biomass that is ciliate protozoa Cow Bos Taurus ≤50 % 117087 Wallace RJ et al., A...
Concentration of protozoa in rumen (majority are ciliates, minority flagellates) Ruminants total protozoa ~10^5-10^6: flagellate species 10^3-10^4 cells/ml of rumen content 112828 Yokoyama MG, Johnson...
Length of rumen ciliates Ciliate spp. ~20 - 200 µm 112829 Yokoyama MG, Johnson...
Fraction of sales of microbial proteases out of total enzyme sales in the world Unspecified ~60 % of total enzyme sales 114387 Souza PM et al., Kinetic...
Size of dissolved organic matter (DOM), operational definition Microbes <0.7 µm 110355 Stocker R. Marine microbes...
Number of bacteria in the human intestinal tract Human Homo sapiens ≤1E+14 bacteria/intestinal tract 110957 Suau A et al., Direct...
Typical microbial and viral abundance in ocean Biosphere microbial abundance ~10^6 microbes/ml: viral abundance ~10^7 viruses/ml N/A 112667 Wigington CH et al.,...
Fraction of soil organic matter (SOM) decomposition that is mediated by soil microorganisms Biosphere 85 - 90 % of SOM decomposition 114098 Siles JA et al., Effect...
Microbial abundance in the organic-rich Holocene deposits at Landsort Deep, Baltic Sea Biosphere ≤10^10 cells/cm^3 115321 Braun S et al., Size...