E. coli bacterium. Illustration of the inner structure of a typical prokaryote cell,in this case an Escherichia coli bacterium. Prokaryote cells do not have a membrane-bound nucleus and organelles. There are few well-distinguished internal structures in prokaryotes,in contrast to the multitude of distinct organelles in eukaryotes. Included here are circular DNA (red),ribosomes (pink),and a few cytoplasmic inclusions (yellow). A typical bacterium is covered by an external capsule (with 'hairs' called fimbriae),and has a rigid cell wall,and an inner cytoplasmic membrane. Some bacteria also have appendages called flagella that they use for locomotion | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Clarivan, Carlos |
Bildgröße: | 4843 px × 3608 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |