68 results found

Search Results for: intensity

Intensity

Intensity the amount of energy per second carried through a unit area by a wave. The condition or quality of being intense,... Read More

Muscle

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

Plant Metabolism

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

Candles

Candle --> candela (Science: physics, unit) The si unit of luminous intensity, 1 lumen per m2; the luminous intensity, in a... Read More

Abiotic and Biotic Factors

Abiotic factors are essentially non-living components that affect the living organisms of the freshwater community. When... Read More

Attenuation factor

Attenuation factor (Science: radiobiology) a measure of the opacity of a layer of material for radiation transversing it,... Read More

Kinesis

Definition noun, plural: kineses A behavioral response of a cell or an organism to a stimulus but not directionally oriented... Read More

Subliminal stimulus

Definition noun, plural: subliminal stimuli (physiology) A stimulus inadequate to generate an action potential and thereby... Read More

Chemokinesis

Definition noun A behavioral response of a cell or an organism to a soluble chemical that leads to random or directionally... Read More

Incomplete dominance

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

Graded potential

Definition noun, plural: graded potentials A change in the electrical potential on the membrane of an excitable cell (e.g. a... Read More

Density dependence

Definition noun (population ecology) An effect in which the intensity changes with the increasing population density, e.g.... Read More

Sensory Systems

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and... Read More

Strength-duration curve

Definition noun A graphical representation depicting the intensity of an electrical stimulus in relation to the duration... Read More

Strength

strength 1. The quality or state of being strong; ability to do or to bear; capacity for exertion or endurance, whether... Read More

Running Water Freshwater Community Factors

This tutorial continues from the previous one, which introduced lotic (running water) communities. Here, some of the... Read More

Brightness

Brightness (Science: microscopy) The brightness of an extended luminous source is termed the intensity per unit area... Read More

Isodynamic

Isodynamic Of, pertaining to, having, or denoting, equality of force. (Science: physiology) isodynamic foods, those foods... Read More

Phosphorescence

Definition noun The delayed emission of light at temperatures below incandescence, as a result of a previous light... Read More

Luminosity

The quality of being luminous; emitting or reflecting light; its luminosity is measured relative to that of our sun.The... Read More

Congruous hemianopia

Congruous hemianopia Hemianopsia in which the visual field defects in both eyes are completely symmetrical in extent and... Read More

Biological Cell Introduction

It only takes one biological cell to create an organism. In fact, there are countless species of single-celled organisms,... Read More

Biome

Biome Definition What are biomes? There is no universal definition of biomes. But biome definition in biology of different... Read More

Genetic Control – On and Off Genes

Reviewed by: Mary Anne Clark, Ph.D. This lesson looks at the various factors involved that affect growth and... Read More

Base units

Base units The fundamental units of length, mass, time, electric current, thermodynamic temperature, amount of substance,... Read More

Freshwater Communities & Plankton

Plankton are microscopic organisms that live suspended in the water environment and form a very important part of the... Read More

Phasic

phasic --> adaptation 1. (Science: cell biology) The adjustment of an organism to its environment or the process by which... Read More

Spectrophotometer

Spectrophotometer instrument used to determine the intensity of light of a wavelength transmitted by a solution. Provides... Read More

C3 plant

Definition noun (botany) (1) A plant that utilizes the C3 carbon fixation pathway as the sole mechanism to convert CO2 into... Read More

Biuret test

Definition noun A chemical test that detects any compound containing two or more peptide bonds Supplement Biuret test is... Read More

Supraliminal stimulus

Definition noun, plural: supraliminal stimuli A stimulus above the threshold of sensation or of awareness Supplement In... Read More

Allergy

Allergy 1. (Science: immunology) a state of hypersensitivity induced by exposure to a particular antigen (allergen)... Read More

Microwave

Definition noun A form of electromagnetic radiation that is generally characterized by wavelengths ranging from one meter to... Read More

Androsterone

Definition noun, plural: androsterones A steroid hormone, with a chemical formula of C19H30O2, has masculinizing effects,... Read More

Water in Plants

The movement of molecules, specifically water and any solutes, is vital to understand in light of plant processes. This will... Read More

Primer extension

Definition noun A method that uses the enzyme Reverse Transcriptase (RNA-dependent DNA polymerase) to determine the... Read More

Cell Biology

It only takes one biological cell to create an organism. In fact, there are countless species of single celled organisms,... Read More

Impetus

Impetus 1. A property possessed by a moving body in virtue of its weight and its motion; the force with which any body is... Read More

Avidity

Definition noun, plural: avidities The combined strength of bond affinities in a complex. Usage The term may be used in... Read More

Genius

Genius Origin: L. Genius, prop, the superior or divine nature which is innate in everything, the spirit, the tutelar deity... Read More