Search Results for: toxins
Filtration
Filtration Definition What is filtration? Filtration is separating a solid from a fluid through a porous material that... Read More
Humoral immunity
Let’s get to know where one should place humoral immunity, the topic of today’s discussion!! By the end of the article,... Read More
Endoplasmic reticulum
Endoplasmic Reticulum Definition The endoplasmic reticulum is a membrane-bound organelle in cells of eukaryotic cells... Read More
Cyanobacteria
Cyanobacteria Definition Cyanobacteria is a group of photosynthetic bacteria widely distributed in various aquatic habitats... Read More
Parasitism
Organisms depend on different sources of food to survive. Larger organisms like plants make their own food (autotrophs) and... Read More
Immune response
Immune Response Definition An immune response is defined as the reaction of the body in response to the presence of a... Read More
Plasma membrane
Do all cells have a plasma (or cell) membrane? Yes, all cells have a biological membrane that separates the protoplasm from... Read More
Parenchyma
Parenchyma Definition What does parenchyma mean? Let's define the word "parenchyma". Most of the functional tissues in... Read More
Golden algae
In phycology, the golden algae are algal species that are found mostly in freshwater. They are also called the chrysophytes.... Read More
Pinocytosis
Pinocytosis Definition What is pinocytosis? Pinocytosis is the ingestion of extracellular fluids, i.e. the fluid... Read More
Nematocyst
All organisms are composed of millions of cells. Many cells serve specific purposes and are specialized to do distinct... Read More
Pathobiology of allergy and its most severe form, anaphylaxis
When allergy season looms, some people with serious hypersensitivity to allergens tend to be apprehensive of what may come.... Read More
Cladosporium species in indoor environments
Cladosporium is a fungus that mostly found in indoor and outdoor molds. It is a species that formed in simple or branching... Read More
Bacteriolysin
Definition noun, plural: bacteriolysins (1) A specific antibody that combines with bacterial cells (antigens) and, in the... Read More
Biological magnification
Definition noun, plural: biological magnification The increasing concentration of a particular substance (e.g. toxin) as it... Read More
Pathotoxin
Toxins released by a... Read More
Clostridium tetani
Definition noun An obligate anaerobic rod shaped and gram-positive bacterium which appears to looks like a drumstick that is... Read More
Insect Behavior
Insect Behavior Definition An insect behavior refers to the various actions of an insect in response to a stimulus or to... Read More
Silent mutation
A mutation is a change in the nucleotide sequence of a gene or a chromosome. When there is only one nucleotide involved, it... Read More
Streptolysin S
Definition noun A nonantigenic, oxygen-stable β-hemolytic enzyme produced by some bacteria, especially... Read More
Erythrogenic toxin
Erythrogenic toxin (Science: protein) toxin produced by strains of streptococcus pyogenes responsible for scarlet fever.... 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
Nonsense mutation
A nonsense mutation is the type of point mutation that renders the translation process useless by coding for a stop/nonsense... Read More
Medullary chemoreceptor trigger zone
Medullary chemoreceptor trigger zone (CTZ) (anatomy and physiology) It is located in the Medulla (i.e. Part of the brain)... Read More
Streptolysin O
Definition noun An oxygen-labile, immunogenic hemolysin produced by or derived from some strains of... Read More
Synergistic effect
Synergistic Effects Definition In biology, synergistic effects are the effects when chemical substances or biological... Read More