62 results found

Search Results for: atmospheric

Plankton

Plankton is a diverse group of typically microscopic, aquatic organisms suspended in the water column and rely on water... Read More

Environment

Environment Definition What does environment mean? If you mean physical environment, then it is defined as the surrounding... Read More

Respiration

Organization of the Respiratory System Each lung is composed of air sacs called alveoli - the sites of gas exchange with... Read More

Plant Metabolism

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

Photolysis

Photolysis Definition We define photolysis as a chemical process in which chemical compounds or molecules are split into... Read More

Diazotroph

Definition noun, plural: diazotrophs A microorganism capable of assimilating and fixing atmospheric nitrogen... Read More

Ventilation

Ventilation Definition Often when persons think of ventilation, they think of getting clean or enough air into a room. This... Read More

Abiotic Fixation

Definition noun It is part in nitrogen cycle wherein atmospheric nitrogen fixation carries out non-living components to... Read More

In situ

When we talk about an experiment, human intervention, a protocol, or its step or any x, y, z call-of-action, it can be... Read More

Vacuole

A vacuole is a single membrane-bound organelle with no definite shape or size found in both prokaryotic and eukaryotic... 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

Nif gene

Definition noun, plural: nif genes The complex of genes encoding enzymes involved in the fixation of atmospheric... Read More

C4 plant

Carbon fixation is a process of taking carbon dioxide in order to synthesize sugar, such as glucose. Thus, carbon dioxide is... Read More

Calvin cycle

Calvin Cycle Definition The Calvin cycle, also known as the Calvin Benson cycle or the dark reactions, is a series of... Read More

Abiotic

An abiotic factor in Ecology or Biology pertains to any constituent within an ecosystem that lacks inherent life or living... Read More

Elastic cartilage

The cartilage is a connective tissue characterized by having an extracellular matrix that is abundant in chondroitin sulfate... Read More

Cyanobacteria

Cyanobacteria Definition Cyanobacteria is a group of photosynthetic bacteria widely distributed in various aquatic habitats... Read More

Calorie

Definition noun, plural: calories (1) Gram calorie: unit of heat energy that is equal to the amount of heat needed to... Read More

Archaea

Archaea is a group of prokaryotic life forms distinct from bacteria forming a separate domain of life. They possess... Read More

Residual volume

Residual volume is a term that is most often seen in lung physiology where it is defined as the amount of air remaining in... Read More

Microalgae

Microalgae Definition Microalgae (singular: microalga) are microscopic algal species as opposed to other algae that are... Read More

Weather

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

Photosynthesis

Photosynthesis is a physio-chemical process carried out by photo-auto-lithotrophs by converting light energy into chemical... Read More

Endosymbiotic theory

A eukaryotic cell is distinct from a prokaryotic cell by the presence of membrane-bound cellular structures called... Read More

Methanotroph

Definition noun, plural: methanotrophs An organism that metabolize methane as a source of carbon and... Read More

Greenhouse gas

Definition noun Any of the atmospheric gases responsible for the greenhouse effect. Supplement Examples of greenhouse gases... Read More

Streptolysin S

Definition noun A nonantigenic, oxygen-stable β-hemolytic enzyme produced by some bacteria, especially... Read More

Oxidizer

An oxidizer is a substance that facilitates oxidation in a chemical reaction by accepting electrons from another substance.... Read More

Denitrification

The conversion of nitrates into nitrogen gas which is then released into the atmosphere. This is caused by bacteria and how... Read More

Global warming

Definition' noun The recent increase in the Earth's average atmospheric temperature due to an increase in the levels of... 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

Microaerophile

Definition noun, plural: microaerophiles An organism that lives in environment that only has a low level of... Read More

Facultative anaerobe

Facultative Anaerobe Definition What does facultative anaerobe mean? Facultative organisms are the most adaptable... Read More

Symbiont

Definition noun, plural: symbionts An organism in a symbiotic relationship Supplement Symbiont is the term used to refer to... Read More

Biotic factor

Biotic Factor Definition A biotic factor is the living component in an ecosystem. The term "biotic" means "of or related... Read More

Endosymbiosis

Definition noun A symbiosis wherein the symbiont lives within the body of its host Supplement Symbiosis pertains to a close... Read More

Primary productivity

Planet Earth is home to different types of life forms ranging from microscopic bacteria to giant whales and elephants. To... Read More

Obligate anaerobe

Definition noun An anaerobe that does not require oxygen and lives only in anaerobic environment. Supplement Exposure to... Read More

Bacteria

Bacteria Definition What are bacteria? What is the definition of bacteria in biology? Bacteria are defined as 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