54 results found

Search Results for: donor

Conjugate

Conjugate Definition Conjugate in a broader sense refers to related pairs of substances or entities that are interconnected... Read More

Conjugation

Conjugation generally means the joining or coming together (union), such as in certain unicellular organisms (some bacteria,... 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

Proton donor

proton donor (Science: chemistry) An acid, a susbstance that donates protons in an acid-base reduction... 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, 2009Published 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

Gene transfer

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

Alloimmunity

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

Organ

Definition Of Organ An organ is a collection of tissues that carries out a function or set of related ones. An organ often... 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

Redox reaction

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

Oxidation

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

Phosphorylation

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

Oxidoreductase

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

Mitochondrion

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

Allele

Allele Definition What are alleles? An allele is a term coined to describe a specific copy of a gene. Genes, the DNA... 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

Group translocation

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

Methionine

methionine (Science: biochemistry) Contains the SCH3 group that can act as a methyl donor (see s adenosyl methionine).... Read More

Abortive transduction

Abortive transduction Transduction in which the genetic fragment from the donor bacterium is not integrated in the genome of... 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

Alanine

What is alanine? Alanine is a non-essential amino acid. There are two types of amino acids for mammals namely essential and... 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

Sexual reproduction

Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male... Read More

Homoplasty

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

Hfr cell

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

Hfr bacterium

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

P680

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

Acid

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

Embryology

Embryology Definition Embryology is a branch of biology that deals with the topics concerning gamete formation... Read More

Facultative anaerobe

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