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Systematics:
Linnaeus:

1) Binomial (genus/species) —> Coffea arabica [genus species]
2) Sex , Sex , and more Sex

Classification by:
PROKARYOTES - morphology
differential staining
“nutrition” [photosynthesis vs heterotrophic]
Classification [Binomial]
• Genus- larger grouping for which there are many species
• Active ingredient Caffeine in Coffea arabica when ingested naturally causes your
energy levels to rise and causes you to work better etc
...
High levels of caffeine can kill you
...

• Other species that belong in the coffea genus is [arabica; liberica; salvatrix;
bengalensis]
...
e liberica
found in liberia]
• Cultivar [cv] - an example of a cv of coffea arabica would be Mondo Novo which
means “new world”
...
Species is the
minimal component
...
Another example is Coffea, Galium etc [genera]
and are all combined under the family Rubiaceae or other subtropical or pan
tropical families
...

• Climate of a tropical region is warm
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Breeding between two separate species results in hybrids being formed
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Bacterial Diversity
• Protist- wide range of different groups that aren’t related- mostly unicellular
groups
• Xylelle fastidious move by a twitching motility or swarming type of behaviour
...

• Pseudomonas also move by a twitching motility and results in the formation of
biofilms
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“Tethering the flagella of the bacteria to a surface gets a good
indication of the rotation that exists in bacterial motility
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• Motor causes the turning of the flagella to occur
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• It’s a nano-motor
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You have an internal membrane structure which is
very small; an outer wall which is important and usually a chromosome which
is actually circular in form
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• Major difference between Prokaryotes and Eukaryotes in the Eubacteria
Clade [1) Pro- circular chromosome; Eu- Linear chromosome 2) MotilityPro- flagella which utilizes a rotatory motor; Eu- another flagella that
is termed as undulipodium]
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PROKARYOTES - morphology
differential staining
“nutrition” [photosynthesis vs heterotrophic]
Morphology
• There are three types of structures usually associated with bacteria 1) Cocci
[circular form] 2) bacilli [rod] 3) Spirilli (trypenoma) and differential
stationing allows us to identify between these forms when observed under

dark field microscopy

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