Search Results for: toxic_substances
Obligate aerobe
Before we define obligate aerobes, let us first understand and define aerobic organisms. Aerobic organisms are those that... Read More
Selectively-permeable membrane
Selectively Permeable Membrane Definition We can define selectively permeable membranes as those that are selectively... Read More
Eubacteria
Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More
Biological magnification
Definition noun, plural: biological magnification The increasing concentration of a particular substance (e.g. toxin) as it... Read More
Protein Activity and Cellular Metabolism
Protein Binding Sites The ability of various molecules and ions to bind to specific sites on the protein surface forms the... Read More
Effect of Chemicals on Growth & Development in Organisms
Plants Plants require a large number of elements to function properly, mainly carbon, oxygen, and hydrogen, essentially... Read More
Respiration
Organization of the Respiratory System Each lung is composed of air sacs called alveoli - the sites of gas exchange with... Read More
Neurotoxins
neurotoxins toxic substances from microorganisms, plants or animals that interfere with the functions of the nervous system.... Read More
Digestion and Absorption of Food
The gastrointestinal (GI) system includes the gastrointestinal tract (mouth, pharynx, esophagus, stomach, small intestine,... Read More
Agonal rhythm
Agonal Rhythm Definition Agonal rhythm is the slow, irregular heart rhythm (electrical activity of the heart), particularly... Read More
Myocardium
Myocardium Definition What is the myocardium of the heart? It is the muscular middle layer of the heart that is... Read More
Catabolism
Catabolism Definition Catabolism is the branch of the metabolic process that breaks down complex, big molecules into... Read More
Unicellular
Unicellular organisms are organisms consisting of one cell only that performs all vital functions including metabolism,... Read More
Endoplasmic reticulum
Endoplasmic Reticulum Definition The endoplasmic reticulum is a membrane-bound organelle in cells of eukaryotic cells... Read More
Osmoregulation
Definition noun The process of regulating water potential in order to keep fluid and electrolyte balance within a cell or... Read More
