Abïogenez
Abïogenez

The definition of what Abiogenesis Abiogenesis is the creation of organic molecules by forces that are different from living organisms. While organisms can create carbon-carbon bonds is relatively easy thanks to the enzyme to make it otherwise requires a lot of energy. In the beginning...

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...

Amniotic
Amniotic

The definition of what is a Amnion the Amnion is extraembryonal the membrane that surrounds the developing embryo of amniote. It acts as a protective pouch along with three other nazaralieva fabrics shell: chorion, yolk SAC and allantois. Then the membranes are enclosed in a shell (in birds, reptiles and some...

Anaplasia – Leiomyosarcoma – Leiomyoma
Anaplasia - Leiomyosarcoma - Leiomyoma

The definition of what Anaplasia Anaplasia is a term used to describe cells which have lost the unique characteristics that define them as a certain type of fabric. Literally from the Greek roots of the word means “to form backward” in the sense that normal cells become...

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...

animal cells
animal cells

The definition of Animal Cells animal Cells are the basic unit of life in organisms of the Kingdom Animalia. It is eukaryotic cells, which means that they have a true nucleus and specialized structures called organelles, which perform different functions. Plants, fungi and simplicity have eukaryotic cells,...

cell biology