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| Property | Organism | Value | Units | ID | Details |
|---|---|---|---|---|---|
| Ratio of photosynthetic active radiation (PAR) to energy flux in solar radiation | Biosphere | 2.1 (1.86-2.31) | Einstein per MJoule | 100934 | Global PAR related to... |
| Irradiance for the saturation of photosynthesis | Plant common mallow Malva neglecta | 500 to 600 | μmol photons×m^-2×s^-1 | 106368 | Greer DH, Thorpe MR.... |
| Ratio of the number of turnovers (ratio of the potential capacity for electron transport) of PSI to that of PSII for the whole thylakoid | Unspecified | 1.4 | Unitless | 106050 | Albertsson P. A quantitative... |
| Number of PPRs [proton-pumping rhodopsins] in specialized purple membrane | Archaea Halobacterium salinarum | >100,000 | PPRs/cell | 111697 | Claassens NJ, Volpers M... |
| Quantum efficiency of bacteriorhodopsin | Archaea Halobacterium salinarum | ~60 | % | 111310 | Claassens NJ, Volpers M... |
| Flux density of water vapor loss in a leaf | Biosphere | 4.3 | milliMol H2O per m^2 per sec | 100675 | Nobel, P. S. "Plant ... |
| Absorbed quantum yield | Plant Camissonia claviformis | 0.055 | mole CO2/einstein | 107708 | Mooney HA, Ehleringer J... |
| Range of light intensity that can be seen by humans | Human Homo sapiens | <10^-2 photons/µm^2/sec (starlight) to >10^8 photons/µm^2/sec (bright sunlight) | photons/µm^2/sec | 111341 | F. Rieke and D. A. Baylor... |
| Fraction of light that PSII should process if cyclic electron flow is used | Unspecified | 44 | % | 106049 | Kramer DM, Evans JR.... |
| Rod luminosity distribution in spectrum | Unspecified | Table - link | N/A | 111992 | Hecht S, Shlaer S, Pirenne... |
| Quantitative comparison of energy transformation in a typical thylakoid membrane and in a rhodopsin membrane | Unspecified | Table - link | N/A | 105052 | John A. Raven Functional... |
| Irradiance for the saturation of photosynthesis | Plant Melilotus indicus | 50 to 100 | μmol photons×m^-2×s^-1 | 106369 | Greer DH, Thorpe MR.... |
| Non cyclic electron transport flux from cytosol (water) to NADP+ | Unspecified | 1.5 (Table - link) | µmol electrons/(m^2×sec) | 105054 | John A. Raven Functional... |
| Non cyclic H+ transport flux from cytosol (water) to NADP+ | Unspecified | 4.5 (Table - link) | µmol H+/(m^2×sec) | 105055 | John A. Raven Functional... |
| Number of rhodopsin molecules in rod photoreceptor cell | vertebrates | toad ~3×10^9: mammal ~10^8 | rhodopsins/rod | 111344 | F. Rieke and D. A. Baylor... |
| LIght level below which no appreciable photosynthesis can occur (1% light level) | Phytoplankton | 0.415 | mol quanta/m^2/day | 107377 | Ricardo M. Letelier,... |
| Integration time of the response to a dim flash | Macaque Macaca fascicularis | ~250 | ms | 107388 | Baylor DA, Nunn BJ, Schnapf... |
| Dark rate of discrete noise events in rod | Macaque Macaca fascicularis | 0.0063 | sec^-1 | 107389 | Baylor DA, Nunn BJ, Schnapf... |
| Number of membrane disks in rod photoreceptor cell | Toad | ~2,000 | disks/cell | 111343 | F. Rieke and D. A. Baylor... |
| Average width of planar Purkinje cell dendritic tree | Mouse Mus musculus | 7 | µm | 112027 | Li L et al., Visualizing... |