Dictionary > Penicillin

Penicillin

penicillin
(Science: drug) probably the best known of the antibiotics, derived from the mould penicillium notatum. It blocks the cross linking reaction in peptidoglycan synthesis and therefore destroys the bacterial cell wall making the bacterium very susceptible to damage.
Any of various antibiotics obtained from penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases.An antibiotic discovered by the Scottish chemist Sir Alexander Fleming in 1928, which is produced by the mould penicillium that proves toxic to a number of pathogens and therefore is of excellent medicinal value.


You will also like...

An artistic depiction of a human embryo
Growth and Development of a Human Baby

Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

primitive arthropods
Arthropods

The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..

IQ, Creativity and Learning
IQ, Creativity and Learning

Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..

Homeostatic Mechanisms and Cellular Communication
Homeostatic Mechanisms and Cellular Communication

Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

Photosynthesis and respiration
Plant Metabolism

Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..

Biological Viruses
Biological Viruses

Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...