Standard metabolic rate (SMR) of a single cell

Value 1.18E-06 J/hour
Organism Ciliate Paramecium caudatum
Reference Katsu-Kimura Y, Nakaya F, Baba SA, Mogami Y. Substantial energy expenditure for locomotion in ciliates verified by means of simultaneous measurement of oxygen consumption rate and swimming speed. J Exp Biol. 2009 Jun212(Pt 12):1819-24. doi: 10.1242/jeb.028894. p.1821 right column top paragraphPubMed ID19482999
Comments "VO2=5.86X10^-8+1.42X10^-7U (eq.2) [where VO2=rate of oxygen uptake and U=swimming speed] Because the standard metabolic rate (SMR) is defined as the energy spent independent of locomotion (Hill et al., 2004), it can be estimated to be VO2 at a zero swimming speed. The linear regression of VO2 vs U gives us a primary approximation of SMR of a single Paramecium cell as 1.18X10^–6J/h by extrapolating VO2 down to U=0 and equating 1 liter of oxygen with 20.1 kJ (Schmidt-Nielsen, 1984)." Note-at U=0 eq.2 gives VO2=1.18X10^-6kJ/h rather than 1.18X10^-6J/h
Entered by Uri M
ID 110787