2. eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over...
TRANSCRIPT
![Page 1: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/1.jpg)
2. Eubacteria“true” bacteriamicroscopicex cyanobacteria (blue-green
algae) on earth for over 3 billion years
able to carry out photosynthesis (produces oxygen)
oxygen conc of atmosphere increased allowing oxygen breathers (animals) to survive
![Page 2: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/2.jpg)
Uses of Eubacteriadigestion in intestinesyoghurt/cheese productionfermentation (wine, beer, pickling…)wastewater/oil spill/toxic spill treatmentBiologySourcedecomposers
![Page 3: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/3.jpg)
Dangerous Eubacteriacause health
problems: strep throatfood
poisoning (E. coli and salmonella)
![Page 4: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/4.jpg)
Structure & Function of Bacteria microscopic smallest living
cells classified
according to:1. cell shape2. cell wall
structure3. motility (way of
moving)
![Page 5: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/5.jpg)
1. Cell Shape3 basic cell shapesspherical – “cocci”rod-shaped – “ bacilli”spiral – “spirochetes”
![Page 6: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/6.jpg)
prefixes are added to show living arrangement of bacteria
strepto – chainstphlyo - cluster
![Page 7: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/7.jpg)
CAN YOU NAME IT???
staphylococcus diplococcus
streptococcus
![Page 8: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/8.jpg)
2. Cell Wall Structure2 kinds of cell walls, appear
different when stained with Gram stain
peptidoglycan – thick coat of sugars, makes wall strong & rigid (Gram postive)
less peptidoglycan (Gram negative)
![Page 9: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/9.jpg)
Movementvarious methods:most mobile bacteria use flagella
(whip-like tail)others secrete mucous can glide
on
![Page 10: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/10.jpg)
Typical Bacteria
![Page 11: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/11.jpg)
![Page 12: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/12.jpg)
How Bacteria Reproduce1. Asexual - Binary
Fission1 original cell splits into
2can occur in 20 minutes
for many bacteria species.
In 12 hours, 1 bacterium can divide to form a colony of 68 billion cells.
overcrowding, waste, and food availability do not allow populations to grow this large.
produces colonies of bacteria that are genetically identical.
![Page 13: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/13.jpg)
2. Types of Sexual Reproduction
1. Transformation: bacteria pick up stray DNA from their surroundings.
2. Conjugation: two bacterial cells join (= conjugate) to exchange genetic material (plasmids, separate from main DNA)
![Page 14: 2. Eubacteria “true” bacteria microscopic ex cyanobacteria (blue-green algae) on earth for over 3 billion years able to carry out photosynthesis (produces](https://reader035.vdocuments.us/reader035/viewer/2022062805/5697c0191a28abf838cce835/html5/thumbnails/14.jpg)
3. Transduction: viruses that infect bacteria transmit genetic material from another sourceEndospores form when
environmental conditions make normal functions too difficult.