196 results found

Search Results for: agent

Oxidizer

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

Oxidation

Oxidation Definition How do we define oxidation? There are several definitions of the oxidation process. Oxidation can be... Read More

Reservoir host

Reservoir Host Definition A reservoir host is a host that harbors the pathogen and serves as a source of the infective... Read More

Cardiotonic agent

Cardiotonic agent agents that have a tonic effect on the heart or increase cardiac output. They may be glycosidic steroids... Read More

Agent

Agent (Science: pharmacology) Any power, principle or substance capable of producing an effect, whether physical, chemical... Read More

Agar

What Is Agar? Agar, also called agar agar, is a natural gelling agent derived from seaweed (specifically algae belonging to... Read More

Fastidious

Fastidious Definition We can define fastidious as a term used in microbiology to denote a species that lacks the ability to... Read More

Susceptible

Resistance, vulnerability, sensitivity, tolerance, and susceptibility are some highly important terminologies across the... Read More

Chelating agent

Definition noun, plural: chelating agents A ligand, often an organic compound, which reacts with a metal ion to produce a... Read More

Hydrophilic

Hydrophilic Definition What does a hydrophile (or hydrophilic molecule) mean? If a molecule is “water-loving”, it is... Read More

Virulence

Virulence Definition In biology, virulence is defined as the degree to which a pathogenic organism can cause disease. A... Read More

Parthenogenesis

To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More

Vector

Vector Definition When one thinks of vectors one may think of many different things. This is because a vector can be... Read More

Reducing sugar

Reducing Sugar Definition What is reducing sugar? The type of sugar that acts as the reducing agent and can effectively... Read More

Mutagen

Mutagen Definition What is a mutagen? A mutagen is a substance or agent that causes DNA impairment that results in the... Read More

Ferrous lactate

Definition noun A greenish white crystal or (powder) made up of iron (Fe2+) and lactate anions Supplement Ferrous lactate is... Read More

Redox reaction

Redox Reaction Definition What are redox reactions? This is a common term in chemistry and biology. In chemistry, a redox... Read More

Flavin mononucleotide

Definition noun plural: flavin mononucleotides fla·vin mon·o·nu·cle·o·tide, ˌmɒnəʊˈnjuːklɪəˌtaɪd A... Read More

Disinfectant

Disinfectant An agent that disinfects, applied particularly to agents used on inanimate objects. Compare: antiseptic. An... 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

Biosecurity and Biocontrol

By: Maria Victoria Gonzaga In the previous lesson, we learned about the importance of modern science... Read More

Nicotinamide adenine dinucleotide phosphate

Definition noun A coenzyme made up of ribosylnicotinamide 5'-phosphate (nmn) coupled by pyrophosphatelinkage to the... Read More

Lactic acid

Definition noun (1) A colorless or yellowish, syrupy, water-soluble liquid, which is a byproduct of anaerobic glucose... Read More

Inflammatory response

Definition noun, plural: inflammatory responses (medicine) A response of the body to an injurious agent, characterized by... Read More

Pathogenicity

Definition noun, plural: pathogenicities The capability (of a pathogenic agent) to cause disease Supplement Pathogenicity... Read More

Light-independent reaction

The process of photosynthesis is a biological procedure in which plants produce oxygen and energy (sugar) by using light... Read More

Opportunistic pathogen

Opportunistic Pathogen Definition How do we define opportunistic pathogen? The opportunistic pathogen is an infectious... Read More

Hypersensitivity

Hypersensitivity Definition Hypersensitivity is the exaggerated immune response to protect the human from foreign bodies... Read More

Obligate parasite

Parasitism is a form of symbiosis that occurs between a parasite and its host. The parasite is the organism that generally... Read More

Diaphoresis

What is Diaphoresis? Diaphoresis is referred to excessive or profuse perspiration or sweating which may be due to... Read More

Gram-positive endospore-forming rods

Gram-Positive Endospore-Forming Rods Definition Gram-positive endospore-forming rods are a group of rod-shaped bacteria... Read More

Facultative anaerobe

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

Haemostatic

Definition adjective (1) Capable of stopping haemorrhage or bleeding. (2) An agent or device that can arrest haemorrhage or... Read More

Electron acceptor

Definition noun A molecule that receives or accepts electrons from another molecule during a redox reaction. Supplement An... Read More

Isomaltose

Definition noun plural: isomaltoses i·so·mal·tose, aɪsoʊˈmɔːltəʊz A disaccharide formed from the combination of... Read More

Traumatic dermatitis

Definition noun A form of dermatitis that is caused by a physical agent or an irritant Supplement Dermatitis is a condition... Read More

Zone of inhibition

Definition noun (microbiology) The clear region around the paper disc saturated with an antimicrobial agent on the agar... Read More

Methyl aldehyde

methyl aldehyde --> formaldehyde (Science: chemical) Commonly used fixative and antibacterial agent. As a fixative it is... Read More

Demecolcine

Definition noun (cytogenetics) A cytotoxic alkaloid isolated from Colchicum autumnale, and is used as an antineoplast... Read More

Hyperosmotic

Hyperosmotic Definition What is hyperosmotic? The word hyperosmotic is derived from two Greek words: 'hyper', meaning... Read More