size comparison of microorganisms Meters Visibility scale Relative size of Microbes Prokaryotes Eukaryotes Viruses Naked eye Light microscope Electron microscope
size comparison of microorganisms Meters Visibility scale Relative size of Microbes Prokaryotes Eukaryotes Viruses Naked eye Light microscope Electron microscope
a cell increases in size, its surface area – to – volume ratio decreases Surface area and volume relationships in cells
a cell increases in size, its surface area – to – volume ratio decreases Surface area and volume relationships in cells
spirallum Shape: Bacteria have a few basic shapes spherical coccus Rod-shaped bacillus
spirallum Shape: Bacteria have a few basic shapes spherical coccus Rod-shaped bacillus
• The cell wall of the bacterial cell is a complex, semi-rigid structure that is responsible for the characteristic shape of the cell. The cell wall surrounds the underlying, fragile plasma (cytoplasmic) membrane and protects it and internal parts of the cell from adverse changes in the surrounding environment. • Almost all prokaryotes have cell walls. Prokaryotic cell wall
• The cell wall of the bacterial cell is a complex, semi-rigid structure that is responsible for the characteristic shape of the cell. The cell wall surrounds the underlying, fragile plasma (cytoplasmic) membrane and protects it and internal parts of the cell from adverse changes in the surrounding environment. • Almost all prokaryotes have cell walls. Prokaryotic cell wall
Gram+ GramSchematic diagram of bacterial cell walls Bacteria can be divided into two major groups, called gram-positive and gram-negative. The original distinction between gram-positive and gram-negative was based on a special staining procedure, the Gram stain
Gram+ GramSchematic diagram of bacterial cell walls Bacteria can be divided into two major groups, called gram-positive and gram-negative. The original distinction between gram-positive and gram-negative was based on a special staining procedure, the Gram stain