123 results found

Search Results for: radiation

Electromagnetic radiation

Definition noun The radiation that consists of associated, interacting electric and magnetic field waves traveling at the... Read More

Adaptive Radiation

Reviewed by: Mary Anne Clark, Ph.D. When Charles Darwin was in the Galapagos Islands, one of the first things he... Read More

Adaptive radiation

Definition noun The diversification of several new species from a recent ancestral source, each adapted to utilize or... Read More

Radiation

radiation (Science: radiobiology) propagation of energy through space. In the context of this report, it is electromagnetic... Read More

Radiation biophysics

Radiation biophysics The study of the effects of radiation on cells, tissues, biomolecules, and living... Read More

Irradiation

Irradiation treatment by ionising radiation, such as x-rays or radioactive sources such as radioactive iodine seeds. See:... Read More

Sunlight

Definition noun The electromagnetic radiation of the sun that reaches the earth, particularly infrared, visible light, and... Read More

Genetics – Lesson Outline & Worksheets

  Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics - Definition:... Read More

Pioneer species

You might have come across news of some barren lands turning into luscious grasslands or forests after decades? Or you might... Read More

Microwave

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

Electromagnetic spectrum

Definition noun The spectrum of all types of electromagnetic radiation Supplement The electromagnetic spectrum includes... Read More

Visible light

Definition noun The electromagnetic radiation with wavelengths between 400 nm and 750 nm and can produce a visual... Read More

Allopatric speciation

We can define speciation as a process by which the novel genetically independent group of organisms are formed through the... Read More

Bolus injection

A bolus injection is the act of administering a dose of medication or substance directly into the bloodstream by injection.... Read More

Benign

Benign Definition How to define benign? The meaning of benign in a general sense is "beneficial" and "pleasant". Benign is... Read More

Silent mutation

A mutation is a change in the nucleotide sequence of a gene or a chromosome. When there is only one nucleotide involved, it... Read More

Divergent evolution

Divergent Evolution Definition Divergent evolution refers to the process by which interbreeding species diverged into two... Read More

Exogenous

Exogenous Definition Exogenous is a word referring to a factor or event coming or contributing from outside a defined... Read More

Denaturation

Denaturation Definition In biochemistry, denaturation is defined as a process in which a molecular structure deviates from... Read More

Convergent evolution

Convergent evolution definition What is convergent evolution? Convergent evolution is a concept in evolutionary biology... Read More

Ion

We have been introduced to ions in varied fields of Science like Physics, Chemistry, and Biology. This article takes you on... Read More

X-ray

Definition noun, plural: X-rays (1) A ray characterized generally by its wavelength ranging from 0.01 to 10 nm, and... Read More

Synergistic effect

Synergistic Effects Definition In biology, synergistic effects are the effects when chemical substances or biological... Read More

Physical Development in Humans

The Newly Born Child Depending on the nutrients available to the child within pregnancy and the genetic makeup of the... Read More

Photon

Definition noun, plural: photons (physics) A quantum unit of light energy or electromagnetic radiation Supplement A photon... Read More

Genome

Genome Definition What is a genome? As defined in biology, a genome is a complete set of deoxyribonucleic acid (DNA) within... Read More

Integumentary system

Integumentary System Definition The integumentary system is the outermost layer of the body. The animal body, in... Read More

The Gene Pool and Population Genetics

Reviewed by: Mary Anne Clark, Ph.D. The previous tutorial is about adaptive radiation. Adaptive radiation is... Read More

Leukocyte

Leukocytes, also called the white blood cells (WBCs), inhabiting our immune system are the cells that exhibit astonishing... Read More

Contamination

Contamination Definition Contamination, sometimes interchanged with pollution, is the existence of live things or... Read More

Genetics and Evolution

Tutorials in Genetics and Evolution immerse on the molecular aspects and the works of nature that led to what every living... Read More

Regulation of Organic Metabolism, Growth and Energy Balance

Organic Metabolism Events of Absorptive and Post-absorptive States. The absorptive state is the period during which... Read More

Light

Definition noun (1) (physics) The electromagnetic radiation of any wavelength, or sometimes only referring to a range of... Read More

Atom

In the enchanting tapestry of life, the smallest of heroes and a celestial protagonist emerges—'the atom'. With grace and... 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

Dose

Dose 1. (Science: pharmacology) a quantity to be administered at one time, such as a specified amount of medication. 2.... Read More

Adaptive zone

Definition noun, plural: adaptive zones An ecological opportunity for the development of adaptive radiation, enabling a... Read More

Radiodensity

Definition noun The state or quality of being radiodense, i.e. dense to X-rays or other radiation Supplement In radiography,... Read More

Filter

Filter 1. A porous substance through which a liquid or gas is passed in order to separate it from contained particulate... Read More

Light-dependent reaction

Many organisms, such as green plants, convert light energy into chemical energy through the mechanism of photosynthesis. In... Read More