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Vector

Vector Definition When one thinks of vectors one may think of many different things. This is because a vector can be... Read More

Precipitating factors

Precipitating Factor Definition Precipitating factors are factors that initiate or promote the onset of any illness,... Read More

Substance

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

Fibroblast

The building block of living things is known as the cell. The cell contributes to many parts and functions of different... 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

Genetic Engineering Advantages & Disadvantages

  Through genetic engineering, scientists are able to move desirable genes from one plant or animal to another or... Read More

Gene Action – Operon Hypothesis

Reviewed by: Mary Anne Clark, Ph.D. Some genes are switched on or off depending on environmental conditions. The... Read More

Human Perception – Neurology

A better understanding of human perception unlocks the key to how the mind works, an advantage when working with people with... Read More

Plant Metabolism

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

Kingdom Animalia

Kingdom Animalia Definition Each person can say that they know of or can name at least one animal. However, do people know... Read More

Chloroplast

Chloroplast Definition What is chloroplast? In biology, a chloroplast refers to the organelle found within the cell of... Read More

Avoidance-avoidance conflict

Definition (psychology) A psychological conflict or a situation of indecision and vacillation when an individual has to... Read More

Carbon fixation

Carbon Fixation Definition We know that the earth contains many elements. The periodic table shows us just how many... Read More

Voice

voice 1. Sound uttered by the mouth, especially that uttered by human beings in speech or song; sound thus uttered... Read More

Valence electron

What are valence electrons? Why are they significant? Valence electrons definition in chemistry: The electrons in an atom's... Read More

Boil

Boil 1. To heat to the boiling point, or so as to cause ebullition; as, to boil water. 2. To form, or separate, by boiling... Read More

Epidermis

Epidermis Definition What is the epidermis? We can define the epidermis as one or more layers of cells forming the tough... Read More

Approach-approach conflict

Definition (psychology) A psychological conflict or a situation of indecision where an individual is confronted having to... Read More

Ecosystem

Ecosystem Definition An ecosystem is a system consisting of biotic and abiotic components that function together as a unit.... Read More

Weather

weather To undergo or endure the action of the atmosphere; to suffer meteorological influences; sometimes, to wear away, or... Read More

Reflection

reflection 1. The act of reflecting, or turning or sending back, or the state of being reflected. Specifically: The return... Read More

Bound

Bound The external or limiting line, either real or imaginary, of any object or space; that which limits or restrains, or... Read More

Portion

portion 1. That which is divided off or separated, as a part from a whole; a separated part of anything. 2. A part... Read More

Genetic Mutations

Reviewed by: Mary Anne Clark, Ph.D. Genetic Mutations Genetic mutations are inherited variations in an... Read More