1 / 12

Bacterial Virulence Factors

Bacterial Virulence Factors. Some bacteria have certain cell parts that help them to invade other organisms better. These are called virulence factors . Some of these features are common to protists and fungi also. Can you recognise the ones shown on the next slide?. A.

wells
Download Presentation

Bacterial Virulence Factors

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Bacterial Virulence Factors • Some bacteria have certain cell parts that help them to invade other organisms better. These are called virulence factors. • Some of these features are common to protists and fungi also. • Can you recognise the ones shown on the next slide?

  2. A Cell Wall – protection, invasion, evasion Flagellum - motion Cell Parts D B Ribosome – production of toxins/attachment proteins on cell wall Cilia - motion

  3. Shapes

  4. Spores

  5. Gram’s Stain

  6. Toxins • Some bacteria produce toxins which can cause further damage to cells or disruption to cellular activities: • Eg. tetanus disease caused by infection with Clostridium tetani which produces the tetanus toxin, causing all muscles to remain flexed by binding and blocking neurotransmitter receptors • Eg. Botulism disease caused by food-borne infection with Clostridium botulinum which produces the botulinum toxin (botox) that relaxes nerves and prevents them from firing

  7. Gram + bacillus Giardia Gram - coccus

  8. Colonies

  9. Growth Requirements • Oxygen: • Aerobic • Anaerobic • Nutrients • Sugar • Carbon • Minerals • Sulphur • Vitamins • Moisture • Temperature

  10. Reproduction Spores Binary Fission

  11. Pili – genetic transfer/communication

More Related