27 results found

Search Results for: photon

Photon

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

Biophoton

Definition noun, plural: biophotons A low-energy photon that is released by a biological system Supplement A photon is the... Read More

photobiology

Photobiology Definition Photobiology, the biology of light, is a subdiscipline in biology. It focuses on the effects of... 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

Plant Metabolism

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

Valence electron

Definition noun, plural: valence electrons Any of the electrons on the outermost shell of an atom and takes part in chemical... Read More

Active transport

Active transport is a type of cellular transport in which substances (e.g. ions, glucose, and amino acids) are transported... Read More

Chlorophyll

Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More

Phosphorescence

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

Photodecomposition

Definition noun The decomposition of a chemical compound by means of light energy or photons. Supplement For example, the... Read More

Photolysis

Definition noun The splitting or decomposition of a chemical compound by means of light energy or photons. Supplement For... Read More

photomedicine

Photomedicine Definition Photomedicine is a branch of medicine that specializes in the therapeutic application of light. As... Read More

Luciferin

Definition noun, plural: luciferins A substrate for the enzyme luciferase, and whose reaction generates... Read More

Fluorescence

Definition noun The absorption and the immediate re-emission of light or photon, which has longer wavelength when re-emitted... Read More

Transport

In biology, transport refers to the act or the means by which a molecule or ion is moved across the cell membrane or via the... Read More

Luciferase

Definition noun, plural: luciferases Any of the group of enzymes that act on the oxidation of luciferin of bioluminescent... Read More

Photoheterotroph

Definition noun, plural: photoheterotrophs An organism that depends on light for most of its energy and principally on... Read More

P680

Definition noun The reaction center chlorophyll (or the primary electron donor) of photosystem II that is most reactive and... Read More

Osmotrophy

Definition noun The process of taking in of dissolved organic compounds that are absorbed into the cells via extracellular... Read More

Accessory pigment

Definition noun, plural: accessory pigments A non-chlorophyll pigment inside the chloroplast of photosynthetic organisms,... Read More

Sunlight

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

Gamma ray

Definition noun, plural: gamma rays Very powerful and penetrating, high-energy electromagnetic radiation of shorter... Read More

Chlorosome

Chlorosome is a photosynthetic micro-compartment that serves as a light-harvesting complex in sulfur bacteria and other... Read More

Plant cell

Plant Cell Definition A plant cell refers to any cell of a plant. It is the structural and functional unit of plants. Plant... Read More

Electromagnetic radiation

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

Carrier protein

Carrier protein is a type of cell membrane protein involved in facilitated diffusion and active transport of substances out... Read More

Phototroph

Definition noun, plural: phototrophs An organism, typically a plant, obtaining energy from sunlight as its source of energy... Read More