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The basic six-helix structure of the domain appears to be conserved as far back as the ced-3 and ced-4 genes in C. elegans, the organism in which several components of the apoptotic machinery were first characterized. CARDs are present on a number of proteins that promote apoptosis, primarily caspases 1,2,4,5,9, and 15 in mammals. [citation needed]
Gac fruit, rich in lycopene Ingesting carotenoid-rich foods affects the plumage of flamingos. Lutein, a Xanthophyll.. Carotenoids are produced by all photosynthetic organisms and are primarily used as accessory pigments to chlorophyll in the light-harvesting part of photosynthesis.
[4] [5] Pigments are also known to play a role in pollination where pigment accumulation or loss can lead to floral color change, signaling to pollinators which flowers are rewarding and contain more pollen and nectar. [6] Plant pigments include many molecules, such as porphyrins, carotenoids, anthocyanins and betalains.
Biology is the scientific study of life. [1] [2] [3] It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. [1] [2] [3] For instance, all organisms are composed of at least one cell that processes hereditary information encoded in genes, which
The hierarchy of scientific classification. Taxonomy mnemonics are used to memorize the scientific classification applied in taxonomy. They are usually constructed with a series of words that begin with the letters KPCOFGS, corresponding to the initials of the primary taxonomic ranks.
A replica of a Victorian zoetrope. A zoetrope is a pre-film animation device that produces the illusion of motion, by displaying a sequence of drawings or photographs showing progressive phases of that motion.
Phloem (/ ˈ f l oʊ. əm /, FLOH-əm) is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, [1] to the rest of the plant.
[1] PPO may accept monophenols and/or o -diphenols as substrates. [ 2 ] The enzyme works by catalyzing the o - hydroxylation of monophenol molecules in which the benzene ring contains a single hydroxyl substituent to o -diphenols ( phenol molecules containing two hydroxyl substituents at the 1, 2 positions, with no carbon between). [ 3 ]