Bactérie E. coli. Illustration de la structure interne d'une cellule procaryote typique, dans ce cas, une bactérie Escherichia coli. Les cellules procaryotes n n

• Contributeur: Science Photo Library / Alamy Banque D'Images
• ID de l’image: 2AD4HBC
• Taille du fichier: 50 MB (1 MB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 4843 x 3608 px | 41 x 30,5 cm | 16,1 x 12 inches | 300dpi
• Date de la prise de vue: 23 juin 2016
• Photographe: CARLOS CLARIVAN/SCIENCE PHOTO LIBRARY

Informations supplémentaires

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.

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