120 results found

Search Results for: pigment

Chlorophyll

Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More

Pigment

pigment 1. Any material from which a dye, a paint, or the like, may be prepared; particularly, the refined and purified... Read More

Accessory pigment

Definition noun, plural: accessory pigments A non-chlorophyll pigment inside the chloroplast of photosynthetic organisms,... Read More

Hypomelanism

All the body cells of living organisms bear some color due to one or the other pigment molecule or complex. The pigment can... Read More

Light-dependent reaction

Many organisms, such as green plants, convert light energy into chemical energy through the mechanism of photosynthesis. In... Read More

Specific absorption coefficient

Definition noun A factor that measures the absorbance of light per unit of path length (of the spectrophotometer cuvette,... Read More

Plant Metabolism

Introduction Plants are responsible for incredible feats of molecular transformation. The processes are always being... Read More

Phycobilin

Definition noun, plural: phycobilins A water-soluble accessory pigment found in red algae and... Read More

Carotenoid

Definition noun, plural: carotenoids (botany) Any of the pigment molecules, typically yellow, red, and orange, that interact... Read More

Incomplete dominance

Incomplete Dominance Definition After Gregor Mendel discovered inheritance laws, the term ''incomplete dominance'' was... Read More

Melanin

Definition noun A group of insoluble pigments found in melanophores and produced from the oxidation of tyrosine, followed by... Read More

Plastid

Definition noun, plural: plastids A double membrane bound organelle involved in the synthesis and storage of food, and is... Read More

Albino

Definition noun, plural: albaninos An organism with albinism, which is a condition characterized mainly by a lack of or an... Read More

Melanosome

Definition noun, plural: melanosomes An organelle in pigment cell that synthesizes and stores melanin Supplement A... Read More

Melanocyte

Definition noun, plural: melanocytes A type of pigment cell that, in particular, produce melanin, and occurs in the... Read More

Leaf

Leaf Definition (botany) A plant organ that is specialized for photosynthesis. Collectively, it constitutes foliage.... Read More

Non-Mendelian Inheritance

Reviewed by: Mary Anne Clark, Ph.D. The inheritance patterns seen in Mendel's monohybrid and dihybrid crosses... Read More

Albinism

Definition noun A hereditary, congenital disorder characterized by the complete or partial lack of pigmentation production... Read More

Melanophore

Definition noun, plural: melanophores A type of pigment cell that, in particular, produce and store... Read More

Amelanism

Definition noun A condition characterized by the complete lack of pigments (or melanin) Supplement Melanin is a compound... Read More

Lipofuscin

Definition noun, plural: lipofuscins (cell biology) Any of the minute, yellow-brown, lipogenic pigment granules that... Read More

Genetic Control – On and Off Genes

Reviewed by: Mary Anne Clark, Ph.D. This lesson looks at the various factors involved that affect growth and... Read More

Photolysis

Photolysis Definition We define photolysis as a chemical process in which chemical compounds or molecules are split into... Read More

Etioplast

Definition noun, plural: etioplasts (botany) A plastid that developed in darkness or under low light conditions Supplement A... Read More

Proplastid

Definition noun, plural: proplastids A small, colourless organelle that gives rise to a plastid (e.g. chloroplast,... Read More

Pheomelanin

Definition noun A type of melanin pigment that is made up of benzothiazine units and is responsible for yellow and pink to... Read More

Chromatophore

Definition noun, plural: chromatophores A pigment-containing cell or light-reflecting structure, especially found in fish,... Read More

Myocardium

Myocardium Definition What is the myocardium of the heart?  It is the muscular middle layer of the heart that is... Read More

Leucoplast

Definition noun, plural: leucoplasts A plastid lacking photosynthetic pigments and involved in various biosynthetic... Read More

Multiple alleles

Alleles are the pairs of genes occupying a specific spot called locus on a chromosome. Typically, there are only two alleles... Read More

Neuromelanin

Definition noun A type of melanin pigment present in parts of the brain, particularly in the neurons of substantia nigra and... Read More

Melanism

Definition noun The condition wherein an unusually high amount of melanin is produced and deposited resulting in the dark... Read More

Allele

Allele Definition What are alleles? An allele is a term coined to describe a specific copy of a gene. Genes, the DNA... Read More

Permanent Tattoo Means Permanent Immune Action Of Macrophages

Have you ever wondered why a permanent tattoo seemed to last forever? A simple assumption would be is that the ink could... Read More

Algae

Algae are photosynthetic organisms that possess photosynthetic pigments such as chlorophyll. However, they lack true roots,... Read More

Yellow

yellow being of a bright saffronlike colour; of the colour of gold or brass; having the hue of that part of the rainbow, or... Read More

Photosynthesis

Definition noun The synthesis of complex organic material using carbon dioxide, water, inorganic salts, and light energy... Read More

Organelle

The cell is regarded as the structural, functional, and biological unit of all organisms. It is a membrane-bound structure... Read More

Carotene

Definition noun, plural: carotenes Any of the group of carotenoids characterized by the lack of oxygen on its molecular... Read More

Green

Green 1. Having the colour of grass when fresh and growing; resembling that colour of the solar spectrum which is between... Read More