Viruses & Bacteria
description
Transcript of Viruses & Bacteria
![Page 1: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/1.jpg)
Viruses & Bacteria
A guide to understanding the similarities and differences of viruses
and bacteria
![Page 2: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/2.jpg)
Two Monera Kingdoms
• Archaebacteria
• Eubacteria
![Page 3: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/3.jpg)
Archaebacteria
• Ancient life form• Live in extreme
environments• More than 300 million
years old.
![Page 4: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/4.jpg)
Eubacteria
• Most abundant form of life on Earth.
• Make foods, cause diseases and decompose matter.
• Live in warm, pH balanced, low-salt environments.
• Different cell membranes and RNA than Archaebacteria.
![Page 5: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/5.jpg)
Viruses
• Greek word meaning “to poison”.
• Measured in nanometers (nm).
• A nanometer is = to 1 billionth of a meter.
• Viruses have 2 parts: a core of hereditary material and an outer coat of protection.
• A bacteriophage is a type of virus that infects a bacteria.
![Page 6: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/6.jpg)
Bacteriophage
• It is a virus.• It attaches to bacteria
with it’s tail.• It sends it’s genetic
material from it’s head to it’s tail.
• More of the virus reproduces in the host bacteria.
![Page 7: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/7.jpg)
Viruses come in many shapes and sizes!
• Viruses range in size from 10-250 nm.
• They do not have cells.
• They are non-living.
• They contain hereditary material (DNA or RNA).
• Most must have a host to survive.
• Strong protein coat.
![Page 8: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/8.jpg)
Bacteria
• Kingdom: Moneran has been split into the Acheabacteria Kingdom and the Eubacteria Kingdom.
• One celled organisms.• No nucleus• Oldest form of life on Earth.• Most live in colonies.
![Page 9: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/9.jpg)
Three types of bacteria
• Spirilla (spigh-RIHL-uh)
• Spirillum (singular)
• Cork-screw shaped.
![Page 10: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/10.jpg)
Cocci
• Cocci (KAHK-sigh)
• Coccus (singular)
• Spherical shaped
![Page 11: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/11.jpg)
Bacilli
• Bacilli (buh-SIHL-igh)
• Bacillus (singular)
• Rod shaped.
![Page 12: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/12.jpg)
Movement of Bacteria
• Bacteria move with Flagella.
• These are tail like structures that help the bacteria to move in liquid.
![Page 13: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/13.jpg)
Reproduction
• Bacteria reproduce by Binary Fission.
• They split in half!• When food is scarce
bacteria can form an Endospore.
• This is a protective resting cell.
![Page 14: Viruses & Bacteria](https://reader035.fdocuments.us/reader035/viewer/2022070405/56813ff0550346895dab016e/html5/thumbnails/14.jpg)
They can double in number every 20 minutes!