Pigment
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Pigment
In biology, pigment is any material resulting in color in plant or animal cells which is the result of selective absorption.
pigments
Any normal or abnormal colouring matter in plants, animals, or micro-organisms.
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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.
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 ...
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.
pigment
[L. pigmentum, paint]
A colored substance that absorbs light over a narrow band of wavelengths.
pilus pl. pili ...
Blood pigment. A molecule used by an organism to transport oxygen efficiently, usually in a circulatory system (e.g., hemoglobin).
Antenna Pigments
Chlorophylls a and b differ slightly in the wavelengths of light that they absorb best (although both absorb red and blue much better than yellow and green). Carotenoids help fill in the gap by strongly absorbing green light.
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.
Pigment prevents light reflection within the eyeball by absorbing light
Ciliary body
- Accommodation
- Secretion of humour ...
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.
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).
red pigment of red algae
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
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The pigment (melanin) consists of dark brown or black granules of very small size, closely packed together within the cells, but not involving the nucleus.
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Respiratory pigments increase the oxygen-carrying capacity of the blood. Humans have the red-colored pigment hemoglobin as their respiratory pigment. Hemoglobin increases the oxygen-carrying capacity of the blood between 65 and 70 times.
melanocyte - pigment cell. In the vertebrates, melanocytes are derived from neural crest, migrate dorsolaterally as melanoblasts to reside in the basal layer of the epidermis.
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Chlorophyll a captures the blue-violet and red wavelengths of light and chlorophyll b, the blue and red-orange and the accessory pigments capture other wavelengths and pass them to chlorophyll a in the reaction centers.
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.
So the fur or the skin's completely white because you can't make the pigment.
Among its roles in plant cell function, the central vacuole stores salts, minerals, nutrients, proteins, pigments, helps in plant growth, and plays an important structural role for the plant.
Movement of pigment vesicles for protective coloration
Discharge of vesicle content for water regulation in protozoa
Cell division--cytokinesis
Movement of chromosomes during mitosis and meiosis
Cellular motors ...
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.
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.
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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.
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.
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 ...
Chlorophyll several types of green‚ photosynthetic pigments‚ the chemical structure of which includes a porphyrin ring with magnesium in the center‚ which are found in chloroplasts
(chloro = green; phyll = leaf) ...
[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.
Carotenoids Extended polyenes that absorb light between 400 and 500 nm and serve as accessory pigments in photosynthesis by funneling the energy to the photosynthetic reaction center.
In genetic epidemiology, an epistatic effect is the modification of the risk conferred by one marker by the presence of a marker from an unrelated gene (unlinked gene-gene interaction). For examples, see Kajiwara, 1994 (retinitis pigmentosa); ...
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.
 See also: Organ, Cells, Trans, Plant, Protein
  
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