1.3 describe the common features shown by prokaryotic organisms such as bacteria
Prokaryotes are unicellular organisms that consist of a single prokaryotic cell. Prokaryotic cells are simple cells that do not have a true nucleus or other cell organelles. Bacteria and Archaea are the two domains of life that are prokaryotes. Prokaryotes can be contrasted with eukaryotes (plants, animals, fungi, and protozoa).
Bacteria:
- microscopic single-celled organisms; they have a cell wall, cell membrane, cytoplasm and plasmids
- they don't have a nucleus but contain a circular chromosome of DNA
- some bacteria can carry out photosynthesis but most feed off other living or dead organisms.
- examples include Lactobacillus bulgaricus, a rod-shaped bacterium used in the production of yoghurt from milk, and Pneumococcus, a spherical bacterium that acts as the pathogen causing pneumonia.
Bacteria:
- microscopic single-celled organisms; they have a cell wall, cell membrane, cytoplasm and plasmids
- they don't have a nucleus but contain a circular chromosome of DNA
- some bacteria can carry out photosynthesis but most feed off other living or dead organisms.
- examples include Lactobacillus bulgaricus, a rod-shaped bacterium used in the production of yoghurt from milk, and Pneumococcus, a spherical bacterium that acts as the pathogen causing pneumonia.
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