55 results found

Search Results for: endogenous

Endogenous pyrogen

Definition noun, plural: endogenous pyrogens A type of pyrogen produced by activated immune cells, and incite the rise in... Read More

Antigen

Antigen Definition What is an antigen? A simple definition is that an antigen refers to any substance that triggers an... Read More

Endogenous

Endogenous (Science: biology) developing or originating within the organisms or arising from causes within the... Read More

Agonist

What is an Agonist? In biology, an "agonist" is the "doer of an action". Opposite of it is the antagonist, which opposes... Read More

Exogenous

Exogenous Definition Exogenous is a word referring to a factor or event coming or contributing from outside a defined... Read More

Exogenous pyrogen

Definition noun, plural: exogenous pyrogen A type of pyrogen that is of microbial origin, such as the lipopolysaccharide in... Read More

Chronobiology

Chronobiology Definition Chronobiology is a branch of biology that studies time-related phenomena (e.g., biological... Read More

Circadian rhythm

Circadian Rhythm Definition A circadian rhythm is an endogenously-driven biological rhythm with a period close to 24... Read More

Diurnal rhythm

Definition noun, plural: diurnal rhythms A biological rhythm that primarily express a periodicity during daylight... Read More

Infradian rhythm

What is the Infradian Rhythm? An infradian rhythm is a type of biological rhythm that lasts longer than 24 hours, with a... Read More

Immune response

Immune Response Definition An immune response is defined as the reaction of the body in response to the presence of a... Read More

Substance

Substance Definition What is a substance? The word substance finds varied usages in different science fields. In general... Read More

Ultradian rhythm

Definition noun, plural: ultradian rhythms A biological rhythm that is repeated throughout a 24-hour circadian day and... Read More

Chronobiologist

Definition noun, plural: chronobiologists A professional or an expert in the field of chronobiology Supplement A... Read More

Purine

Definition noun plural: purines pu•rine, ˈpjʊəɹiːn A heterocyclic aromatic compound with a chemical structure... Read More

Methods of Breaking Seed Dormancy

Definition of Seed Dormancy:Non – germination of seeds due to absence of suitable conditions is termed as dormancy.... Read More

Beta-blocker

Definition noun, plural: beta-blockers A drug that blocks the action of endogenous catecholamines on beta-adrenergic... Read More

Pyrogen

Definition noun, plural: pyrogens A substance inducing fever by acting on the hypothalamic thermoregulatory center and... Read More

Biological clock

Definition noun, plural: biological clocks Any of the various mechanisms that regulate biological rhythms Supplement A... Read More

Lipotropin

Definition noun, plural: lipotropins A polypeptide hormone of the anterior pituitary gland, presumably acts by promoting fat... Read More

Cellobiose

Definition noun plural: cellobioses cel·lo·bi·ose, ˌsɛləʊˈbaɪəʊz A disaccharide made up of two glucose... Read More

Elicitor

Elicitor (Science: plant biology) substance that induces the formation of phytoalexins in higher plants. May be exogenous... Read More

Sedges

sedge 1. (Science: botany) Any plant of the genus Carex, perennial, endogenous herbs, often growing in dense tufts in marshy... Read More

Liliopsida

Definition noun (plant taxonomy) A taxonomic class of the division Magnoliophyta comprised of lilies, grasses, palms,... Read More

Albumin

Albumin Definition What is albumin? Is albumin a protein? In biology, albumin is a protein that is responsible for the... Read More

Oxidant

Definition noun, plural: oxidants (1) Any substance that has the ability to oxidize other substance. (2) A molecule or atom... Read More

Progestogen

Definition noun, plural: progestogens A steroid hormone that is activated by the binding to the progesterone receptor, and... Read More

Dopamine

Definition noun, plural: dopamines 3,4-dihydroxyphenethylamine (chemical formula: C8H11NO2); a neurotransmitter or a hormone... Read More

Adenosine triphosphate

Adenosine Triphosphate Definition noun plural: adenosine triphosphates (biochemistry) An organic compound that is... Read More

Moon face

Definition noun The face swelling up into a rounded or moon shape, with large jowls, due to increased fat deposition... Read More

Regulation of Organic Metabolism, Growth and Energy Balance

Organic Metabolism Events of Absorptive and Post-absorptive States. The absorptive state is the period during which... Read More

FAAH-OUT mutation for a life of no pain – No FAAH, no pain

A Scottish woman claims that she has not experienced pain over some supposedly painful conditions, like a severe joint... Read More

Progesterone

Definition noun, plural: progesterones A progestogen hormone, with a chemical formula of C21H30O2, naturally produced in... Read More

Lilies

Lily Origin: as. Lilie, L. Lilium, gr. Cf. Flower-de-luce. 1. (Science: botany) a plant and flower of the genus Lilium,... Read More

Symbiosis

Symbiosis Definition What is symbiosis? Symbiosis can be defined as any kind of relationship or interaction between two... Read More

Triple response

Definition noun (immunology) The three cardinal circulatory responses of the skin (i.e. reddening, flare formation or... Read More

Adenosine

Definition noun plural: adenosines a·den·o·sine, əˈdɛn əˌsin A purine nucleoside that has adenine bound to a... Read More

Zeitgeber

Definition noun, plural: zeitgebers An external or environmental cue that helps regulate biological clock that drives... Read More

Autoantigen

Definition noun, plural: autoantigens An endogenous antigen that is recognized as nonself by the immune system, which should... Read More

Phosphorylation

Phosphorylation Definition We can define phosphorylation as a biochemical process in which a phosphate molecule is added to... Read More