143 results found

Search Results for: influence

Influence

Influence To control or move by power, physical or moral; to affect by gentle action; to exert an influence upon; to modify,... Read More

Actions of Caffeine in the Brain with Special Reference to Factors That Contribute to Its Widespread Use

IV. Actions of Caffeine on Brain Functions and Behavior Having discussed the molecular and neuronal actions of caffeine,... Read More

Genetic drift

Genetic Drift Definition What is genetic drift in simple terms? The simple definition of genetic drift ( also referred to... Read More

Apparent competition

Competition Definition One of the many branches of biology is ecology. Ecology is the study of the relationships that the... Read More

Ascendant

Ascendant 1. Ascent; height; elevation. Sciences that were then in their highest ascendant. (Temple) 2. (Science: astronomy)... Read More

Weight

weight 1. The quality of being heavy; that property of bodies by which they tend toward the center of the earth; the effect... Read More

Induce

Induce 1. To lead in; to introduce. The poet may be seen inducing his personages in the first Iliad. (Pope) 2. To draw on;... Read More

Epoch

Epoch 1. A fixed point of time, established in history by the occurrence of some grand or remarkable event; a point of time... Read More

Symbiosis

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

The Psychobiology of Hysteria

Editorial Hysteria is often regarded as the archetypal psychodynamic illness. Freud carried out much of his early work on... Read More

Generation of resting membrane potential

Stephen H. Wright Department of Physiology, College of Medicine, University of Arizona, Tucson, Arizona 85724... Read More

Hypothalamus

Definition noun, plural: hypothalami A small region of the forebrain comprised of several small nuclei, located between the... Read More

Endocrine gland

Definition noun, plural: endocrine glands Any of the ductless glands secreting hormones that are released directly into... Read More

Mad

Mad 1. A slattern. 2. The name of a female fairy, especially. The queen of the fairies; and hence, sometimes, any... Read More

Dominant

Dominant Definition The word dominant or dominant trait is commonly used in biology. The general meaning of dominant is to... Read More

Polygenic trait

Polygenic trait definition Polygenic trait refers to a trait that is controlled by multiple non-allelic genes. These genes... Read More

Mental impression

mental impression --> impression 1. The act of impressing, or the state of being impressed; the communication of a stamp,... Read More

Genetic diversity

Genetic Diversity Definition Each species is composed of individuals with their own set of genes. A gene is the inheritance... Read More

Impulse

Impulse 1. The act of impelling, or driving onward with sudden force; impulsion; especially, force so communicated as to... Read More

Centrosome

Centrosome Definition What is a centrosome? The centrosome is considered to be the main microtubule-organizing... Read More

Chondroblast

There are two forms of cells in cartilage: chondroblasts and chondrocytes. The chondroblasts are cells that secrete the... Read More

Impression

Impression 1. The act of impressing, or the state of being impressed; the communication of a stamp, mold, style, or... Read More

Law of Independent Assortment

Law of Independent Assortment Definition The Mendelian inheritance principles are derived from and named after the monk,... Read More

Move

move 1. To cause to change place or posture in any manner; to set in motion; to carry, convey, draw, or push from one place... Read More

Law of Segregation

Mendel’s Laws of Inheritance The father of genetics, Gregor Mendel, reported his findings in 1860 that were initially... Read More

An introduction to Homeostasis

Researched and Written by Jonjo Minns Submitted to biologyonline.com on February 25, 2009. Published in biologyonline.com... Read More

Neural Control Mechanisms

Nerve cells called neurons generate electric signals that pass from one end of the cell to another and release chemical... Read More

Sympathy

sympathy 1. Feeling corresponding to that which another feels; the quality of being affected by the affection of another,... Read More

Phenotype

Phenotype refers to the observable characteristics of an organism as a multifactorial consequence of genetic traits and... Read More

Bearing

Bearing 1. The manner in which one bears or conducts one's self; mien; behavior; carriage. I know him by his bearing.... Read More

Roots

Upon seed germination, the embryo root, called the radicle, grows and develops into the first root. The radicle may thicken... Read More

Consciousness and Behavior

States of Consciousness Defined either by (1) behavior - ranging from attentive and alert to coma and (2) electrical... Read More

Independent variable

Independent Variable Definition To define an independent variable, let us first understand what a variable is. The word... Read More

Muscle

Muscle cells are specialized to generate force and movement. There are three types of muscle tissue: (1) skeletal muscle,... Read More

Control of Body Movement

Motor Control Hierarchy A motor program is the pattern of neural activities required to perform a movement is created and... Read More

Spermiogenesis

Spermiogenesis Definition Spermiogenesis is the stage of spermatogenesis wherein the spermatids differentiate into mature... 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

Complete dominance

Complete Dominance Definition Genetics is the study of how traits are inherited by organisms and in what ways these... Read More

Branches of biology

Branches of Biology Biology, the scientific study of life, includes several relevant branches. Below is a list of major... Read More

Family traits

When one thinks of family, they often think of persons who are blood-related to each other as parents to their children and... Read More