Motile

Motility is the ability of an organism or fluid to move independently, using metabolic energy. This is in contrast to mobility, which describes the ability of an object to be moved. Motility is genetically determined, but may be affected by environmental factors. For example, the presence of nutrients can affect the motility of bacteria.

Types of Motility

There are several types of motility, including:

• Flagellar motility: This is the most common form of motility in bacteria. It involves the use of one or more flagella, which are long, whip-like structures that protrude from the cell body.

• Gliding motility: This is a type of motility that does not involve any appendages. Instead, the organism moves along a surface by secreting a slimy film.

• Twitching motility: This type of motility involves the use of pili, which are short, hair-like structures on the surface of the cell. The pili extend and retract, pulling the cell along.

• Swarming motility: This is a type of motility that involves the coordinated movement of a group of bacteria. It is often seen in biofilms.

Role in Disease

Motility plays a key role in the ability of bacteria to cause disease. For example, bacteria that are able to move are more likely to be able to reach their site of infection. In addition, motility can help bacteria to evade the immune system and to spread within the body.

See Also

• Bacterial motility
• Cell migration
• Chemotaxis
• Motility (disambiguation)

References

Motile Resources
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