they are parasitic and they can reproduce only inside living cells (every kind of organism)
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Shapes and sizes?
Wide variety of them
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Structure?
No cellular structure but have a protein coat (contain one type of nucleic acid, neither DNA or RNA)
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Example?
HIV, tobacco mosaic virus
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Bacteria-is it single celled?
yes
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What does a bacteria cell contain?
cell wall, cytoplasm, and PLASMIDS, a circular chromosome of DNA (no nucleus)
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Can they carry out photosynthesis?
Some can
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Example?
Lactobacillus bulgaricus (rod-shaped bacteria used in yogurt production), Pneumococcus (a spherical bacterium that acts as the pathogen causing pneumonia)
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