agonist
agonist

The definition of an Agonist an Agonist is a molecule that can bind and activate a receptor to cause a biological response. Activity mediated resistance, agonists antagonists, which block the biological responses induced by the agonist. The level of agonist required to induce the desired biological response is called the power. Agonist potency is...

active immunity
active immunity

The definition of what is Active Immunity Active immunity is resistance to disease through the creation of antibodies by the immune system. Unlike passive immunity, where antibodies are introduced into body, active immunity requires a process of training immune cells to recognize and neutralize foreign bodies. Usually a bacteria or virus...

alternative Splicing
alternative Splicing

Alternative splicing is the splicing variant messenger RNA (mRNA), which in the course of gene expression on the basis of the same primary transcript (pre-mRNA) the formation of multiple Mature mRNA. Structural and functional differences of the resulting transcripts can be caused by selective inclusion in the Mature mRNA...

anaphase
anaphase

The definition of what is Anaphase Anaphase is the stage during eukaryotic cell division in which chromosomes are separated to opposite poles of the cell. Phase until anaphase, metaphase, chromosomes are pulled to metaphase plate in the middle of the cell. Although the chromosomes were highly condensed at the beginning of cell division, they...

antioxidant
antioxidant

The definition of what an Antioxidant + test Antioxidants are molecules that prevent oxidation of other molecules. Oxidation is a chemical reaction in which electrons are lost. In living beings this process can be harmful, leading to decomposition of organic molecules. One of the problems...

Antibody
Antibody

The definition of an Antibody an Antibody is a specialized protective protein synthesized by the immune system of vertebrates. These small structures are actually made of 4 different blocks of protein. The ends of the molecule are variable, and can be adapted to bind to any molecule. The shape is determined by the antigens in the system...

Apoptosis
Apoptosis

The definition of Apoptosis Apoptosis is a process that occurs in multicellular organisms when the cell is deliberately “decide” to die. This often happens for the greater good of the whole organism, for example, when the DNA of cells become damaged and it may become cancerous. Apoptosis is called “programmed” cell death, because...

aerobic respiration
aerobic respiration

Definition of Anaerobic Respiration Aerobic respiration is the process by which cells that do not breathe oxygen, release energy from fuel for their vital functions. Molecular oxygen most effective electron acceptor for respiration, due to its high affinity of the nucleus for electrons. However, some...

Паратиреоидный гормон (ПТГ), паратгормон – регулятор кальция в крови
Паратиреоидный гормон (ПТГ), паратгормон
Паратиреоидный гормон (ПТГ), также называемый паратгормоном, вещество, вырабатываемое и секретируемое паращитовидными железами, которое регулирует концентрацию кальция в сыворотке крови. Под микроскопом ПТГ - продуцирующие клетки, называемые главными клетками, выделенными из околощитовидных желез, встречаются в листьях, перемежающихся участками жировой ткани. Иногда клетки располагаются в фолликулах, похожих на те, что имеются в щитовидной железе, но меньших размеров. Как и с другими белковыми гормонами, ПТХ синтезирован как большой неактивный прогормон.

biochemistry dictionary