Search Results for: gradual
Freshwater Communities & Lentic Waters
Lentic (still water) communities can vary greatly in appearance, anything from a small temporary puddle to a large lake is... Read More
Living things
Living Things Definition A living thing pertains to any organism or a life form that possesses or shows the characteristics... Read More
A Look Into Natural Selection and its Mechanisms
Charles Darwin is credited with outlining the fundamentals of evolution. He was a smart and eager pupil and protégé, and... Read More
Thalassophobia
Among many psychological and psychiatric disorders, one is the fear of the ocean and the fear of deep water, which in... Read More
Darwinian fitness
Darwinian Fitness Definition Darwinian fitness refers to the measure of an individual organism's or genotype's reproductive... Read More
Abiogenesis
Definition noun plural: abiogeneses a·bi·o·gen·e·sis, eɪbaɪəʊˈdʒɛnəsɪs (1) The idea that primitive life... Read More
Natural selection
Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More
Development
1. The act of developing or disclosing that which is unknown; a gradual unfolding process by which anything is developed, as... Read More
Sleep and Dreams – Neurology
The Falling Asleep Process During the day when we are awake, our body and brain are working tirelessly to operate our body,... Read More
Hexosaminidase A
Definition noun A hydrolytic enzyme implicated in the breakdown of ganglioside producing... Read More
Senescence
Senescence Definition Senescence is defined as biological aging. In cell biology, it refers to the cell wherein it is no... Read More
Endosymbiotic theory
A eukaryotic cell is distinct from a prokaryotic cell by the presence of membrane-bound cellular structures called... Read More
Great Oxygenation Event
Great Oxygenation Event Definition The Great Oxygenation Event is defined as the surge of dioxygen (O2) levels in the... Read More
Neutral theory of molecular evolution
Definition noun A theory stating that evolutionary changes particularly at the molecular level arise from genetic drift of... Read More
Adaptive evolution
Definition noun A kind of evolution that involves evolutionary changes that are adaptive to a particular... Read More
Circulation
Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More
Intercalary meristem
The basic structural framework of plants is composed of different types of tissues. Based upon the capacity to divide, the... Read More
Cork cambium
Cork Cambium Definition Cork cambium is a secondary meristematic tissue that has a pivotal role in secondary growth in... Read More
Degenerative disease
Degenerative Disease Definition A degenerative disease is defined as a disease characterized by the worsening condition due... Read More
Growth and Plant Hormones
Growth All living organisms begin in the same form: as a single cell. That cell will divide and the resulting cells will... Read More
The Dinosaurs
Everyone has heard about the dinosaurs. No doubt one of the reasons why is because of their size, another being the fact... Read More
The FIFTH MIRACLE: The Search for the Origin and Meaning of Life
The FIFTH MIRACLE: The Search for the Origin and Meaning of Life ... Read More
Biological clock
Definition noun, plural: biological clocks Any of the various mechanisms that regulate biological rhythms Supplement A... Read More
Degenerate
Degenerate means to become worse or less of its kind or former state. In biology, it means an entity performs the same... Read More
Y chromosome
Y chromosome Definition The Y chromosome constitutes one member of the pair of sex chromosomes within an organism, a common... Read More
Decremental conduction
Definition noun The impaired conduction in a portion of a fiber due to progressively lessening response of the unexcited... Read More
Protuberance
protuberance That which is protuberant swelled or pushed beyond the surrounding or adjacent surface; a swelling or tumour on... Read More
First-order kinetics
What is a First-Order Kinetics (First-Order Reaction)? First-order kinetics refers to a reaction wherein the overall rate... Read More
Evolutionary biology
Definition noun The branch of biology concerned with the evolution of organisms, particularly the origin and descent of... Read More
Recruitment
Recruitment (Science: neurology) The gradual increase to a maximum in a reflex when a stimulus of unaltered intensity is... Read More
Saltatory evolution
saltatory evolution The theory that evolution of a new species from an older one may occur as a large jump, such as a major... Read More
Disruptive Selection
An evolutionary process known as disruptive selection (or disruptive natural selection) causes a population to become... Read More