What shape are spirochaetes bacteria?

Spirochaetes are characterized by their unique spiral shape, which is key to their classification and function. This morphology allows them to move in a corkscrew motion, which is particularly advantageous for navigating through viscous environments such as those found in host organisms. Their spiral structure is formed by a series of rigid, helical cells; this shape distinguishes them from other types of bacteria, which may be round (cocci), flat (such as some forms of algae), or rod-shaped (bacilli). The spiral form not only aids in mobility but can also play a role in the bacteria's pathogenicity, influencing the way they invade host tissues. Understanding the distinctive characteristics of spirochaetes is important for identifying and studying these organisms in the context of dental and medical microbiology.