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BioNumbers is in its infancy and there are notable gaps in the available data. Search results often contain false positives.
Please suggest missing data and references to help remedy these shortcomings (feedback box on the left).
Caution: reported numbers depend upon experimental conditions which are provided as part of the BioNumbers entry.
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Size (diameter) of most abundant cyanobacteria Prochlorococcus 0.6 (0.5-0.7) µm 101520
Partensky F, Hess WR... more
GC content of E. coli K12 chromosome Bacteria Escherichia coli 50.8 % 100528
Escherichia coli K12... more
Optical density (OD) at 450nm per 10^9cells/ml Bacteria Salmonella typhimurium 0.9 at growth rate of 0.31 hour^-1 to 4.1 at growth rate of 2.4 hour^-1 Unitless 105886
Aldea M, Herrero E, Esteve MI... more
Cell dimensions of S. typhimurium LT2 at different growth rates Bacteria Salmonella typhimurium Table - link N/A 105857
Aldea M, Herrero E, Esteve MI... more
Total carbon stored in the atmosphere Biosphere 720 (Table - link) 10^15 g 100967
aquatic photosynthesis... more
Concentration of platelets in blood Human Homo sapiens ~200,000 150,000-350,000 platelets/mm^3 102750
Robert E. Marx, DDS,... more
pH in mitochondrial intermembrane space (MIMS) in Human endothelial cell ECV304 Human Homo sapiens 6.88 (±0.09) pH units 107271
Porcelli AM, Ghelli A... more
Lifespan of cells in small intestine Mouse Mus musculus 2 to 3 Days 109231
Potten CS. Stem cells... more
Cell cycle duration of HeLa cell Human Homo sapiens ~22 Hours 109393
Posakony JW, England JM... more
Number of EcorI and EcorV dimer copies per cell Bacteria Escherichia coli EcorI ~1,000 dimer copies/cell: EcorV 100 dimer copies/cell copies/cell 113303
Pollak AJ, Chin AT, Reich... more
Mutation rate per genome per replication Nematode Caenorhabditis elegans 0.018 (Table - link) mutation/genome/replication 100290
Drake JW, Charlesworth B... more
Percent of rRNA and tRNA from total RNA bacteria 95–97 % 102939
Rosenow, C., et al.,... more
Density of starch granules Potato Solanum tuberosum 1.55 g/ml 103206
D. R. Isleib, Density... more
Diffusion coefficient of DNA in water Generic 0.81 to 53 µm^2/s 106089
Lukacs GL, Haggie P, Seksek O... more
Number of DNA repair enzymes and frequency of damaged bases excised Bacteria Escherichia coli ~10^5 repair enzymes/cell: Excised damaged bases are 1 every 10^6 bp N/A 113298
Pollak AJ, Chin AT, Reich... more
Concentration of viruses in seawater Virus 10^6-10^8 viral particles/ml 113291
Taylor MW, Radax R, Steger D... more
Fraction of viral particles removed from seawater Red Sea sponge Negombata magnifica 23 % 113290
Taylor MW, Radax R, Steger D... more
Estimated number of viral particles in feces Human Homo sapiens ≥1E+9 virus-like particles/gram 110707
Minot S, Bryson A, Chehoud C... more
Estimated sulfate reduction rate Cold-water sponge Geodia barretti ≤1,200 nmol [SO4]2-/cm^3 sponge/day 113286
Taylor MW, Radax R, Steger D... more
Total cell number of organs or cell types (for more recent total number of cells in body, 3e+13, see BNIDS 113005, 113006) Human Homo sapiens Table - link Mean total cell number 109708
Bianconi E, et al., An... more