Magnetotaxis

Definition

Magnetotaxis is the ability of certain microorganisms to orient and move along magnetic fields. This behavior aids them in navigating their environment, often to locate optimal conditions for growth.

5 Must Know Facts For Your Next Test

1. Magnetotaxis is primarily observed in magnetotactic bacteria, which contain magnetosomes that align with Earth's magnetic field.
2. Magnetosomes are intracellular organelles composed of magnetic iron minerals such as magnetite or greigite.
3. Magnetotactic bacteria often thrive in aquatic environments where they use magnetotaxis to find low-oxygen zones.
4. The orientation and movement due to magnetotaxis are facilitated by flagella, allowing the bacteria to swim towards favorable conditions.
5. Research on magnetotaxis contributes to our understanding of microbial ecology and has potential applications in biotechnology and nanotechnology.

Related terms

magnetosome: An intracellular organelle containing magnetic iron minerals that help organisms navigate using Earth's magnetic field.

flagella: Long, whip-like appendages that enable many prokaryotic cells to move.

chemotaxis:

Movement of an organism in response to a chemical stimulus.