BACTERIA. Biology Chapter 24. Bacteria are very small. This is a pore in human skin and the yellow spheres are bacteria. Bacteria are very small compar-ed to cells with nuclei. Bacteria compared to a white blood cell that is going to eat it. Bacteria.
Biology Chapter 24
Chemosynthetic bacteria use the sulfur in the “smoke” for energy to make ATP.
Streptococci – in chains
Diplo-bacteria occur in pairs, such as the diplococcus bacteria that causes gonorrhea
Staphylo - bacteria occur in clumps, such as this staphylococcus bacteria that causes common infections of cuts
Strepto- bacteria occur in chains of bacteria, such as this streptococcus bacteria that causes some types of sore throats
The red and yellow dots are bacteria
These heterotrophic bacteria digest oil -- remember oil is partially decayed plant and animal cells
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First the chromosomal DNA makes a copy
The DNA replicates
The two resulting cells are exactly the same
In addition to the large chromosomal DNA, bacteria have many small loops of DNA called Plasmids
This plasmid of DNA is new to the bacteria – added by transformation! Produces the glowing protein
Helicobacter pylori is the pathogenic bacteria that can causes ulcers
Leprosy is a bacterial infection that decreases blood flow to the extremities resulting in the deterioration of toes, ears, the nose and the fingers.
Non-living but depends on the living!
Here is a non-enveloped bacteria virus inserting it’s DNA into a bacterial cell.
Some virus are pushed out by the cell, taking some of the cell membrane with them.
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Here is a classic picture of HIV viral progeny being released from the surface of a T- cell. Notice the membrane coating they receive.
After polio infections, the killer T-cell have destroyed the motor neurons that are producing the virus. The result is a loss of muscle control including the diaphragm. The iron lung changes the pressure to pump air in and out of the lungs.