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Viruses
- Acellular
- No organelles, no chromosomes + no cytoplasm
- Outside a living cell - an inert 'virion'
- Takes over cell's metabolism + multiplies within host cell
- Made up of nucleic acid core, either DNA or RNA, surrounded by a protein coat, the capsid.
Type of cell, what does it not have? How does it take over a host cell? What is its structure?
Prokaryote
A single celled organelle lacking membrane-bound organelles, (such as a nucleus), with its DNA free in the cytoplasm.
Prokaryotes are not available in animals cells so how does this affect the definition of a prokaryote? DNA position? Membranes?
Eukaryote
An organism containing cells that have membrane-bound organelles, with DNA in chromosomes within the nucleus.
Membranes and organelles? DNA position?
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