An aggregate of surfactant molecules in a solution, formed when the hydrophobic tails of the molecules cluster together and the hydrophilic heads face outward.

A microscopic organism, including bacteria, viruses, fungi, and protozoa.

Relating to or caused by microbes, which are microscopic organisms.

A scientist who studies microorganisms such as bacteria, fungi, and viruses.

The branch of science concerned with the study of microorganisms, including their physiology, behavior, and role in disease.

A small, membrane-bound organelle within a cell, such as peroxisomes or glyoxysomes, involved in metabolic processes.

A condition characterized by an abnormally small head, often associated with developmental disorders.

Small-scale evolutionary changes within a population or species over a short period of time, typically involving changes in allele frequencies.

The process of transformation from one life stage to another, often involving significant changes in form, such as in insects or amphibians.

A type of excretory structure found in some invertebrates, such as annelids, involved in the filtration of waste products.