photosynthetic quotient
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photosynthetic ratio — noun also photosynthetic quotient : the ratio of the volume of oxygen given off to the volume of carbon dioxide absorbed by a plant during photosynthesis, this ratio being theoretically near 1 when the primary product of photosynthesis is a… … Useful english dictionary
Photosynthese — Bei den Landpflanzen findet Photosynthese in den Chloroplasten statt, hier in der Blattspreite des Laubmooses Plagiomnium affine. Photosynthese oder Fotosynthese (altgriechisch φῶς phōs „Licht“ und … Deutsch Wikipedia
Hypothetical types of biochemistry — are forms of biochemistry speculated to be scientifically viable but not proven to exist at this time. While the kinds of living beings we know on earth commonly use carbon for basic structural and metabolic functions, water as a solvent and DNA… … Wikipedia
Hemoglobin — Hemoglobin, human, adult (heterotetramer, (αβ)2) Structure of human hemoglobin. The protein s α and β subunits are in red and blue, and the iron containing heme groups in green. Fro … Wikipedia
Panspermia — (Greek: πανσπερμία from πᾶς/πᾶν (pas/pan) all and σπέρμα (sperma) seed ) is the hypothesis that life exists throughout the Universe, distributed by meteoroids, asteroids and planetoids.[1] Panspermia proposes tha … Wikipedia
Life on Mars — For other uses, see Life on Mars (disambiguation). An artist s impression of what Mars surface and atmosphere may look like if Mars were terraformed. Scientists have long speculated about the possibility of life on Mars owing to the planet s… … Wikipedia
