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Property Organism Value Units ID Details
Number of birds lost to predation by domestic cats in the USA each year according to different sources Biosphere Winkler et al., 80 million birds/year: Walsberg 319 - 638 birds/year 116947 Kevin J. Gaston & Tim...
Natural monthly fecundity rate Human Homo sapiens ~25 between ages 20 to 30: <10 after age 35 % 108080 George K, Kamath MS....
Fluctuation in number of neurons in brain area involved in producing and recognizing song Canary bird Serinus canaria 40,000 in spring to 25,000 in fall and winter Neurons 106409 Williams RW, Herrup K....
Terminal velocity of E.coli "free falling" in water - a theoretical estimate Bacteria Escherichia coli 0.05 (equivalent to ~50 hours to fall 1 cm) µm/sec 103870 Calculation analogous...
Intracellular buffering power Metazoa animals Table - link mmol/pH/Liter 110775 Roos A, Boron WF (1981)...
Vacuole-to-cell volume ratio Budding yeast Saccharomyces cerevisiae W303A strain 10±0.2%: BY4741 strain 7±0.2%: DDY904 strain 3–14% % 111977 Chan YH, Marshall WF....
Diameter of lipid droplets (LDs) Yeast typically 300nm-1µm: in late log/early stationary phase of growth 350-450nm N/A 113111 Kohlwein SD, Veenhuis M...
In pancreatic beta cells, the tissue ATP/ADP ratio rises upon glucose stimulation from Mouse Mus musculus ~2-3 to ~8-9 Unitless 109309 Berg J, Hung YP, Yellen...
ADP-binding site cellular concentration Rat Rattus norvegicus ~0.14 mM 109312 Berg J, Hung YP, Yellen...
Usual dimensions of white blood cell on blood smear Unspecified 10 µm - 20 µm 116932 Schmid-Schönbein GW, Shih YY...
Duration of infection cycle Bacteriophage N4 180 minutes 112342 Schito, G. C. (1974)....
Half-time of spontaneous hydrolysis of phoshpomonoester bond in neutral solution at 25°C Generic >500,000 years Figure - link Years 107209 Wolfenden R, Snider MJ....
Maximum turnover numbers of some enzymes Generic Table - link N/A 105086 Stryer et al, Biochemistry...
Average haemoglobin concentration in healthy non-pregnant woman living at sea level Human Homo sapiens 13 - 14 g/dL 112355 Hytten F. Blood volume...
Average increase in plasma volume in healthy woman bearing a normal sized fetus Human Homo sapiens ~1250 ml 112358 Hytten F. Blood volume...
First appearance of mammals on the world stage and time when most modern mammalian species arose Mammals first appearance ~160Ma: most modern species arose 1.8Ma - present million years ago (Ma) 112853 Ley RE et al., Evolution...
Fraction of organic matter by weight in the Murchison meteorite Biosphere ~2 % 112448 Schönheit P, Buckel W...
Kinetic parameters in the large intestinal crypts of experimental animals Rodent Table - link N/A 110532 Nicholas A. Wright, Malcolm...
Estimated rates of beneficial mutation in E. coli & RNA viruses Various 1E-09 - 1E-08 1/genome/generation 112769 Perfeito L, Fernandes L...
Yield of coenzyme Q10 Microbes Bacteria (E. coli) 0.45–3.63 mg/g DCW: Yeast (S. cerevisiae) 12.3 μg/g DCW N/A 113505 Lee SQ, Tan TS, Kawamukai M...