Flashcards: H2 Biology 10 - Bacteria structure

1. no true nucleus/nuclear membrane

2. no membrane-bound organelles, no endoplasmic reticulum

3. no histone proteins in nucleus

4. 70s ribosomes present

5. circular DNA present

bacterial DNA complexes w/ nucleoid associated proteins(H-NS proteins) >

H-NS proteins bind to bacterial DNA & folds DNA into more compact structure >

within folded chromosome, DNA molecule organized into many looped domains >

looped domains compacts circular chromosome about 10x >

bacterial chromosome further compacted through DNA supercoiling

capsule/slime layer >

peptidoglycan cell wall >

plasma membrane >

flagellum(flagella;pl.), fimbriae(pl.) >

plasmid >

70s ribosomes