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Property Organism Value Units ID Details
Number of hairs in human eye lashes Human Homo sapiens 420 unitless 101510 Amazing numbers in biology...
Estimated number of viral particles on earth Biosphere 1E+31 viral particles 110706 Minot S, Bryson A, Chehoud C...
Quantitative data on number, weight or size of lymphoid organs in normal young adult man Human Homo sapiens Table - link N/A 111349 Trepel F (1974) Number...
Number of mutations that occur every time a normal human stem cell divides Human Homo sapiens ≈3 mutations/stem cell division 115305 Tomasetti C, Li L, Vogelstein...
Number of microbial species on Earth Biosphere 10^11 - 10^12 species 113932 Locey KJ, Lennon JT....
The distribution of the number of human cells by cell type Human Homo sapiens Figure - link N/A 112985 Sender R, Fuchs S, Milo...
Total number of osteocytes within the average adult human skeleton Human Homo sapiens ~4.2E+10 Table - link osteocytes 111547 Buenzli PR, Sims NA....
Total number of prokaryotes on the skin of an individual prokaryote ~300,000,000 Cells 108505 William B. Whitman,*†...
Number of genes on 11 plasmids studied Bacteria Borrelia burgdorferi 430 genes 111258 Fraser et al., Genomic...
Assumed number of divisions an average stem cell undergoes during a human lifespan Human Homo sapiens 100 divisions 112678 Jackson AL, Loeb LA....
Turnover number of ion transport sites on red blood cell membrane at 38°C Human Homo sapiens 50000 ions/site/sec 111368 Brahm J. Temperature...
Ratio between number of genes in human gut “metagenome” and human eukaryotic genome Human Homo sapiens >100 unitless 111317 De Filippo C. et al....
Number of endocytic sites on cell surface Budding yeast Saccharomyces cerevisiae 0.43 (±0.15) Patches/µm^2 103215 Kaksonen M, Toret CP...
Number of human pathogens Various 1407 (538 bacteria: 317 fungi: 287 helminths: 208 viruses or prions: 57 protozoa) Pathogenic species 106626 Mark Woolhouse, Sonya...
Number of osteocytes replenished throughout the skeleton on a daily basis Human Homo sapiens 9.1e+6 (Table - link) osteocytes/day 111552 Buenzli PR, Sims NA....
Number of mitochondria in budding cell grown on ethanol Budding yeast Saccharomyces cerevisiae 20-30 Table - link mitochondria/cell 103070 Visser W, van Spronsen EA...
Number of protein kinases in the human genome Human Homo sapiens 523 unitless 101655 Stewart Scherer. A Short...
Ratio between number of genes in microbiome and in human Human Homo sapiens 50-100 unitless 102388 Sears CL. A dynamic ...
Number of archaeal cells on coral surface Coral >10^7 archaea/cm^2 113022 Rosenberg E, Koren O...
Effective Human Population Size according to Human-specific Alu polymorphisms Human Homo sapiens 17500 (Table - link) Individuals 104621 Hawks J, Hunley K, Lee SH...