The procaryotic cell wall
The procaryotic cell wall
Oxidative phosphorylation occurs at cell membrane since there are no mitochondria) HAw AWIOSAWI Cytoplasm Cell membrane The cell wall is outside of cell membrane rigid, protecting cell from osmotic lysis
Cytoplasm Oxidative phosphorylation occurs at cell membrane (since there are no mitochondria). Cell membrane The cell wall is outside of cell membrane – rigid, protecting cell from osmotic lysis. Cell Wall
The Cell Envelope Gram stain Gram Positive Gram Negative
The Cell Envelope Gram Positive Gram Negative
Gram Positive Gram Negative Fixation Crystal violet lodine treatment Decolorization Counter stain safranin
9
2
Cell membrane cell wall ( plus outer membrane Cell wal peptidoglycan attached structures
Cell Envelope • Cell membrane + cell wall (+ plus outer membrane) • Cell wall – peptidoglycan – attached structures
Gram positive Peptidoglycan Plasma membrane Gram negative Outer membrane Peptidoglycan Periplasmic space Plasma membrane
Gram positive Gram negative
GRAM POSITIVE CELA ENVELOPE Degradative enzyme Lipoteichoic acid Peptidoglycan-tejchoic acid 倡但含飞 Cytoplasmic membrane Cytoplasm
Cytoplasm Lipoteichoic acid Peptidoglycan-teichoic acid Cytoplasmic membrane GRAM POSITIVE CELL ENVELOPE Degradative enzyme
Peptidoglycan single macromolecule highly cross-linked surrounds cell provides rigidity
Peptidoglycan • single macromolecule • highly cross-linked • surrounds cell • provides rigidity