103 results found

Search Results for: phenomenon

Hayflick phenomenon

Definition noun The phenomenon characterized by the limited number of times a normal cell population would divide... Read More

Staircase phenomenon

staircase phenomenon --> treppe A phenomenon in cardiac muscle first observed by H.P. Bowditch; if a number of stimuli of... Read More

Rebound phenomenon

Definition noun (1) A temporary deviation from a normal state in the opposite direction following an abrupt removal or... Read More

Hunting phenomenon

Hunting phenomenon --> hunting reaction An unusual reaction of digital blood vessels exposed to cold; vasoconstriction is... Read More

Phenomenon

phenomenon Origin: L. Phaenomenon, Gr. Fainomenon, fr. Fainesqai to appear, fainein to show. See Phantom. 1. An appearance;... Read More

Release phenomenon

release phenomenon The increased tonus and hyperirritability of muscle-stretch reflexes which occur following damage of the... Read More

Incomplete dominance

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

Theory of Neuroscience

Nezih OKTAR Journal of Neurological Sciences (Turkish) 2006, Volume 23, Number 3, Page(s) 155-158. An Open Access... Read More

Polymorphism

Polymorphism Definition The occurrence of two or more different forms or morphs in the population of a species is referred... Read More

Meiosis

What is Meiosis? A simple definition of meiosis would be is this: meiosis is the process of cell division that results in... Read More

Substrate

Substrate Definition What is a "substrate"? The underlying substances or layers are termed as substrate. The definitions of... Read More

Quellung phenomenon

Definition noun A biochemical reaction in which anticapsular antibodies bind to the capsule of a bacterium, resulting in the... Read More

Synergistic effect

Synergistic Effects Definition Synergistic effects (biology definition): the effects when chemical substances or biological... Read More

Density dependent inhibition of growth

Density dependent inhibition of growth (Science: cell culture) The phenomenon exhibited by most normal (anchorage dependent)... Read More

Pleiotropy

Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... Read More

Holism

Holism 1. The principle that an organism, or one of its actions, is not equal to merely the sum of its parts but must be... Read More

Cohesion

Cohesion Definition What is cohesion? Cohesion, in science definition, refers to the state of cohering or sticking together... Read More

Fecundity

Fecundity Definition The meaning of fecundity is the reproductive rate (fecundity rate) or the performance of an individual... Read More

Scared to Death

Scared to Death: Self-Willed Death, or the Bone-Pointing Syndrome   by Patrick D Hahn   Accepted on: September 4,... Read More

Chromatin

Chromatin Definition What is chromatin in a cell? Chromatin is a complex of nucleic acids (e.g. DNA or RNA) and proteins... Read More

Phytoplankton

Definition noun Photosynthetic (plant-like) constituent of plankton, mainly comprised of unicellular... Read More

Aberrant regeneration

Aberrant regeneration Misdirected regrowth of nerve fibres seen for example, after oculomotor nerve injury. Synonym:... Read More

Invagination

Invagination 1. (Science: biology) The condition of an invaginated organ or part. 2. (Science: biology) One of the methods... Read More

Endocytosis

Endocytosis Definition What is endocytosis in biology? Endocytosis is a cellular process by which a cell internalizes any... Read More

Deglutitive

Definition adjective Or, pertaining to, or relating to deglutition Supplement Deglutitive is an adjective form relating to... Read More

Hydrophobic

The fear of mixing or reacting with water under a given set of reaction parameters is often referred to as hydrophobic. In... Read More

Sorting out

sorting out phenomenon observed to occur when mixed aggregates of dissimilar embryonic cell types are formed in vitro. The... Read More

Antibody diversity

Antibody diversity The phenomenon of immense variability characteristic of antibodies, which enables the immune system to... Read More

Genomic imprinting

Definition noun A phenomenon in which the phenotype of the offspring depends on the source of the chromosome containing the... Read More

Polarized light

Definition noun Light in which electromagnetic vibrations oscillate repeatedly in only one direction perpendicular to the... Read More

Cooperativity

Cooperativity phenomenon displayed by enzymes or receptors that have multiple binding sites. Binding of one ligand alters... Read More

Putrefaction

putrefaction 1. The act or the process of putrefying; the offensive decay of albuminous or other matter. Putrefaction is a... Read More

Quellung test

Definition noun A biochemical reaction in which anticapsular antibodies bind to the capsule of a bacterium, resulting in the... Read More

Heliotropism

Definition noun Growth or movement of a cell or an organism in response to the direction of the sun Supplement In general,... Read More

Between Necessity and Probability: Searching for the Definition and Origin of Life (Advances in Astrobiology and Biogeophysics)

Between Necessity and Probability: Searching for the Definition and Origin of Life (Advances in Astrobiology and... Read More

Bioluminescence

Definition noun The production and emission of light by an organism; the capability of an organism to produce and emit light... Read More

Desorption

Definition noun A process wherein a substance is released from another, either from or through the... Read More

Hallucination – Are we the only ones “seeing” things or animals hallucinate, too?

Hallucination is defined as perceiving something that seems real but in fact, it is not. Some references take it as a... Read More

Sex Reversal – When Males Grew Ovaries Instead of Testes

Summary: Sex reversal is not unusual in some animals, especially in invertebrates. As for the vertebrates, there are... Read More

Molecular Basis of Temperature-Dependent Gender of Red-Eared Slider Turtle

Imagine a child inside a womb with a sex yet to be decided not by the pair of sex chromosomes but by the ambient temperature... Read More