Steroid is a complex chemical substance containing the tertracyclic carbon ring system of the sterols; steroids are often used as therapeutic agents.
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Vascular containing specialized vassals for the conduction of fluids: blood and lymph in animals, sap and water in plants.
- Ultrasonic waves
Ultrasonic waves is sound waves of high intensity (beyond the audible range), used for the destruction of microbes or the cleaning of materials.
- Respiratory chin
Respiratory chin is a sequence of oxidation-redaction reactions by which electrons are transferred from an oxidizable substrate to an exogenous
Pathogen is an organism capable of producing disease.
Transformation is the phenomenon by which certain bacteria incorporate DNA from related strains into their genetic makeup.
Halophile is a microorganism whose growth is accelerated by or dependent on high salt concentrations.
Karyogamy is the fusion of gametic nuclei, as in fertilization.