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Based on the content of that review, they proposed a biological definition of romantic love: [ 1] Romantic love is a motivational state typically associated with a desire for long-term mating with a particular individual. It occurs across the lifespan and is associated with distinctive cognitive, emotional, behavioral, social, genetic, neural ...
The dark markings on both birds are due to the black pigment eumelanin. Biological pigments, also known simply as pigments or biochromes, [ 1] are substances produced by living organisms that have a color resulting from selective color absorption. Biological pigments include plant pigments and flower pigments.
G ὑπέρ Βορέᾱ ( hupér Boréā) from the Arctic region ( Hyperborea) glaucous gull, Larus hyperboreus; tundra fleabane, Erigeron hyperboreus. tangle or cuvie, Laminaria hyperborea; estuary beggarsticks, Bidens hyperborea. boreal bur-reed, Sparganium hyperboreum; boreal haircap moss, Polytrichum hyperboreum.
In the 18th century, purple was a color worn by royalty, aristocrats and other wealthy people. Good-quality purple fabric was too expensive for ordinary people. The first cobalt violet, the intensely red-violet cobalt arsenate, was highly toxic. Although it persisted in some paint lines into the 20th century, it was displaced by less toxic ...
Lysosome. Centrosome. Cell membrane. A lysosome ( / ˈlaɪsəˌsoʊm /) is a single membrane-bound organelle found in many animal cells. [ 1][ 2] They are spherical vesicles that contain hydrolytic enzymes that digest many kinds of biomolecules. A lysosome has a specific composition, of both its membrane proteins and its lumenal proteins.
A light-harvesting complex consists of a number of chromophores [ 1] which are complex subunit proteins that may be part of a larger super complex of a photosystem, the functional unit in photosynthesis. It is used by plants and photosynthetic bacteria to collect more of the incoming light than would be captured by the photosynthetic reaction ...
Chromophore. Leaves change color in the fall because their chromophores ( chlorophyll molecules) break down and stop absorbing red and blue light. [ 1] A chromophore is a molecule which absorbs light at a particular wavelength and emits color as a result. Chromophores are commonly referred to as colored molecules for this reason.
Although purple is a very noticeable color, it does need to be painted on a fence post in the most visible way. It is recommended to paint the stripe so that it is three to five feet off the ...