The Midnight Sun is a natural phenomenon in which the sun is above the horizon at midnight. And the rest of the night. And all day long. At Nordkapp (North Cape) the sun stays shining in the sky for over 1,800 hours without setting.
Hereditary coproporphyria. Hereditary coproporphyria (HCP) is a disorder of heme biosynthesis, classified as an acute hepatic porphyria. HCP is caused by a deficiency of the enzyme coproporphyrinogen oxidase, coded for by the CPOX gene, and is inherited in an autosomal dominant fashion, although homozygous individuals have been identified.
Â© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. ribulose bisphosphate (RuBP) A five-carbon sugar that is combined with carbon dioxide to form two three-carbon intermediates in the first stage of the light-independent reactions of photosynthesis (see Calvin cycle).