Bacteria are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in …

5 days ago · Although bacterial cells are much smaller and simpler in structure than eukaryotic cells, the bacteria are an exceedingly diverse group of organisms that differ in size, shape, …

Most types of bacteria aren’t harmful. Some are even good for you. These helpful bacteria are mainly located on your skin or in your gut or digestive system. They’re called resident flora, or …

As of 2021, 1,513 bacterial pathogens have been described [1]. Despite this large number, scientists estimate that pathogens make up less than 7% of all described bacterial species [2]. …

Aug 8, 2025 · In 1838, the German naturalist Christian Gottfried Ehrenberg called them ‘bacteria’, from the Greek word ‘baktḗria’, meaning ‘little stick’. Later, Robert Koch’s research, famously …

Oct 19, 2023 · Although bacteria are diverse, they come in three major shapes: rod, sphere, and curved. Bacterial infection can occur through ingestion, inhalation, or contact with an open …

May 21, 2025 · Visual detection of bacterial growth and color change of media is key to identifying bacteria. The principle of biochemical tests is that different bacteria have different physiology …