Pigment

Pigment
From Wikipedia, the free encyclopedia
Jump to: navigation, search
For the drug referred to as "pigment," see black tar heroin.
Full article >>>

Pigment
In biology, pigment is any material resulting in color in plant or animal cells which is the result of selective absorption.
Full article >>>

Pigments are colorful compounds.
Pigments are chemical compounds which reflect only certain wavelengths of visible light. This makes them appear "colorful". Flowers, corals, and even animal skin contain pigments which give them their colors.
Full article >>>

Plant pigment other than chlorophyll that extends the range of light wavelengths useful in photosynthesis.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Full article >>>

Chapter 14
Generation of bile pigments by haem oxygenase: a refined cellular strategy in response to stressful insults
Roberta Foresti, Colin J. Green and Roberto Motterlini1 ...
Full article >>>

Pigments are molecules that absorb light. When a photon of light strikes a photosynthetic pigment, an electron in an atom contained within the molecule becomes excited. Energized electrons move further from the nucleus of the atom.
Full article >>>

pigmented lesions on areas of the skin exposed to the sun and
an elevated incidence of skin cancer.
It turns out that XP can be caused by mutations in any one of several genes — all of which have roles to play in NER. Some of them: ...
Full article >>>

pigment: The dyelike material in cells that provides color to skin, eye and hair.
prenatal: Before birth.
privacy: The condition of being left alone, out of public view and in control of information that is known about you.
Full article >>>

pigment
[L. pigmentum, paint]
A colored substance that absorbs light over a narrow band of wavelengths.
Full article >>>

pigments Molecules that reflect and absorb light at particular wavelengths.
pilidium larva Free-swimming, hat-shaped larva of nemertean worms characterized by an apical tuft of cilia.
pilidium Free-swimming, hat-shaped larva of nemertine worms.
Full article >>>

A pigment is any substance that absorbs light. The color of the pigment comes from the wavelengths of light reflected (in other words, those not absorbed).
Full article >>>

Blood pigment. A molecule used by an organism to transport oxygen efficiently, usually in a circulatory system (e.g., hemoglobin)
Bloom. (phytoplankton) A population burst of phytoplankton that remains within a defined part of the water column ...
Full article >>>

Xeroderma pigmentosum (XP) is a heritable disease characterized by an extreme sensitivity of skin to UV radiation. Cells of XP patients and extracts of those cells are deficient in repair of DNA damage.
Full article >>>

hemoglobin: a red pigment that binds oxygen and carbon dioxide molecules and carries them through the bloodstream.
herbivores: animals that eat plants.
heterotrophic: species that acquire food from organic matter.
Full article >>>

carotenoids Lipid-soluble photosynthetic pigments made up of isoprene units. cata- down catabolism The phase of intermediary metabolism concerned with the energy-yielding degradation of nutrient molecules.
Full article >>>

Green earth (Min.), a variety of glauconite, found in cavities in amygdaloid and other eruptive rock, and used as a pigment by artists; -- called also mountain green.
Green ebony.
Full article >>>

The next step (conceptually anyways--it may be that this and the first step typically occur simultaneously) is the sequestration of the new pigment into a discrete population of photoreceptors. (By discrete, I don't mean spatially.
Full article >>>

If beta-carotene and other pigments like beta-carotene do not exist in the green tissue, the chlorophyll becomes bleached by the sun, so it's an essential component of green tissues, including rice.
Full article >>>

the absence of normal pigments in the hair, skin, and eyes of animals, or the absence of chlorophyll in plants that normally possess it
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Full article >>>

chlorophyll. The green pigment of plants that captures the energy from sunlight necessary for photosynthesis.
chlorosis. Yellowing or bleaching of normally green plant tissue usually caused by the loss of chlorophyll.
Full article >>>

An organelle containing any plant pigment other than chlorophyll. The pigments may be yellow, orange, or red. Chromoplasts are usually most numerous in the cells of flowers.
Full article >>>

Pigments capture light energy in much the same way as an antenna captures a radio or tv signal. This drives biochemical reactions. The overall effect may be summarized as water plus carbon dioxide are converted to biochemicals.
Full article >>>

Hemoglobin respiratory pigment in the blood which contains a porphyrin ring with iron in the center
(heme = blood; glob = ball)
Hemorrhage abnormal bleeding usually internal and often profuse
(hemo = blood; rhage = to break or burst) ...
Full article >>>

chlorophyll - light-absorbing pigment that plays a central part in photosynthesis
chloroplast - specialized organelle in green algae and plants that contains chlorophyll and performs photosynthesis ...
Full article >>>

Cancer of the cells in the skin that produce melanin, a brown pigment. Melanoma often begins in a mole.
explained:
Listen to a detailed explanation.
Full article >>>

[Gr. chromatos - the surface of the body, the colour of the skin surface, colour; Gr. phoros - bearing]. A pigment containing cell. These are located in the dermis of the skin as well as in other locations in the body.
Full article >>>

Unwinding is also necessary for
DNA repair
. Mutations in the helicase genes on chromosome 2q and 19q are one group of causes of the DNA repair defect xeroderma pigmentosum (an autosomal recessive disease). See also ...
Full article >>>

Retinitis pigmentosa -- group of hereditary ocular disorders with progressive retinal degeneration. Autosomal dominant, autosomal recessive, and x-linked forms. Retinoblastoma -- a childhood malignant cancer of the retina of the eye.
Full article >>>


'"/>