50 results found

Search Results for: donor

Proton donor

proton donor (Science: chemistry) An acid, a susbstance that donates protons in an acid-base reduction... Read More

Donor

Donor (Science: biology) An individual organism that supplies living tissue to be used in another body, as a person who... Read More

Photosynthesis

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

Types of Transplants

Submitted to biologyonline.com on March 7, 2009 Published by biologyonline.com on March 29, 2009   Transplants are... Read More

Hydrogen bond

Definition noun plural: hydrogen bonds A type of chemical bond that is formed when the slightly positive hydrogen atom 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

Ligase

An enzyme is a catalyst or a chemical produced by cells to speed up a biochemical reaction. It is usually a protein molecule... Read More

Recombination DNA repair

Recombination DNA Repair Definition Recombination DNA repair is a biological reparative process in response to DNA damage... Read More

Oxidation

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

Acceptor

Acceptor a compound that will take up a chemical group (e.g., an amine group, a methyl group, a carbamoyl group) from... 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

Alloimmunity

Definition noun, plural: alloimmunities (immunology) A type of immunity that produces an immune response that is attacking... Read More

Antigen

Antigen Definition What is an antigen? A simple definition is that an antigen refers to any substance that triggers an... Read More

Gene transfer

Definition noun, plural: gene transfers The transfer of genes between organisms Supplement Gene transfer pertains to the... Read More

Group translocation

Group Translocation Definition Just like your “home” is a private place where you and your comfort are maintained due... Read More

Mitochondrion

Mitochondrion Definition What are mitochondria? The term “mitochondrion” comes from the two words of the Greek... Read More

Phosphorylation

Phosphorylation Definition We can define phosphorylation as a biochemical process in which a phosphate molecule is added to... 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

Terminal electron acceptor

Definition noun A compound that receives or accepts an electron during oxidation of carbon source, e.g. during cellular... Read More

Oxidoreductase

Definition noun, plural: oxidoreductase (biochemistry) An enzyme that catalyzes the transfer of electrons from an electron... Read More

Facultative anaerobe

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

F-factor

Definition noun A DNA sequence or plasmid that confers certain bacteria the ability to produce a sex pilus for conjugation... Read More

Genetic diversity

Genetic Diversity Definition Each species is composed of individuals with their own set of genes. A gene is the inheritance... Read More

Host

Host An organism that is infected with or is fed upon by a parasitic or pathogenic organism (for example, a virus, nematode,... Read More

Muscular system

Muscular System Definition What is the muscular system? The muscular system is a system that includes muscle cells and... Read More

Hfr bacterium

Definition noun, plural: Hfr bacteria A bacterium that possesses the F factor integrated into the bacterial genome, hence,... Read More

Hfr cell

Definition noun A bacterial cell that possesses the F factor integrated into the bacterial genome, hence, when it conjugates... Read More

Hfr strain

Definition noun A strain of bacterial that possesses the F factor integrated into the bacterial genome, hence, when it... Read More

Homoplasty

Definition noun, plural: (1) (evolution) The acquisition of a similar form or structure between species of different... Read More

Acid

Acid (Science: chemical, chemistry) a fundamental category of many compounds whose water-based solutions have a sour taste,... Read More

Vertical gene transfer

Definition noun (genetics) The transfer of genes from parents to offspring Supplement Gene transfer refers to the movement... Read More

Ionic bond

Definition noun plural: ionic bonds A type of chemical bond in which atoms, ions, or molecules are held together by... Read More

P680

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

Inoculation

Inoculation Definition In Immunology, inoculation is defined as the process of introducing an antigenic substance or... Read More

Electron carriers

Definition noun, plural: electron carriers A molecule capable of accepting one (or more than one) electrons from another... Read More

Endogenote

Endogenote The original complete genome of a bacterium, before addition of new genetic material (an exogenote) from a donor... Read More

Chimera

When we learned about the basic genetics of biological life, we came to know that almost all the cells of an individual have... Read More

Why Embryonic Stem Cell Use is Unethical

By Vicki Mozo Embryonic Stem Cell research offers a remarkable way to treat various disorders where conventional... Read More

Flavoprotein

Definition noun, plural: flavoproteins A protein containing a flavin moiety, e.g. flavin adenine dinucleotide (FAD) and... Read More

Microbe

Microbe Definition What is a microbe? How do we define microbes?  Microbes refer to microorganisms that cannot be seen by... Read More