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SECTION = section about prokaryotes P #2
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Cyanobacteria
they are major producers and fix nitrogen independently or through symbiosis.
What are the cells that prokaryotes possess to perform nitrogen fixation?
Heterocysts.
Gram stain process
Crystal Violet, Iodine, Decolorization, Safranin.
Gram Negative Bacteria
Pink colored, thin cell walls. More resistant to antibiotics.
Gram Positive Bacteria
Purple colored, thick cell walls. More susceptible to antibiotics.
Prokaryotic cells
Do not contain membrane-bound organelles such as nucleus and mitochondria.
Eukaryotic cells
Contain membrane-bound organelles such as nucleus and mitochondria. DNA is found inside the nucleus.
The cell walls are made of what?
Peptidoglycan, also called murein.