Search results
Results from the WOW.Com Content Network
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.
Purple cauliflower contains anthocyanins. Anthocyanins (from Ancient Greek ἄνθος (ánthos) 'flower' and κυάνεος / κυανοῦς (kuáneos/kuanoûs) 'dark blue'), also called anthocyans, are water-soluble vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black. In 1835, the German pharmacist Ludwig ...
MTT assay. A microtiter plate after an MTT assay. Increasing amounts of cells resulted in increased purple colouring. The MTT assay is a colorimetric assay for assessing cell metabolic activity. [1] [2] NAD (P)H-dependent cellular oxidoreductase enzymes may, under defined conditions, reflect the number of viable cells present.
Chromoplast. The coloration of the petals and sepals on the bee orchid is controlled by chromoplasts. Chromoplasts are plastids, heterogeneous organelles responsible for pigment synthesis and storage in specific photosynthetic eukaryotes. [1] It is thought (according to symbiogenesis) that like all other plastids including chloroplasts and ...
In common English usage, purple is a range of hues of color occurring between red and blue. [1] However, the meaning of the term purple is not well defined. There is confusion about the meaning of the terms purple and violet even among native speakers of English. [2] Many native speakers of English in the United States refer to the blue ...
v. t. e. Look up genotype in Wiktionary, the free dictionary. The genotype of an organism is its complete set of genetic material. [ 1] Genotype can also be used to refer to the alleles or variants an individual carries in a particular gene or genetic location. [ 2] The number of alleles an individual can have in a specific gene depends on the ...
Bright coloration of orange elephant ear sponge, Agelas clathrodes signals its bitter taste to predators. Animal colouration is the general appearance of an animal resulting from the reflection or emission of light from its surfaces. Some animals are brightly coloured, while others are hard to see.
Gram stain. Micrograph of a gram-positive coccus and a gram-negative rod. Gram stain ( Gram staining or Gram's method ), is a method of staining used to classify bacterial species into two large groups: gram-positive bacteria and gram-negative bacteria. It may also be used to diagnose a fungal infection. [ 1]