Microbiology Lab Practical Chamberlain Test Questions With Solved Solutions.

total magnification - Answer ocular lens x objective lens Ocular = 10X compound microscope - Answer A light microscope that has more than one lens designed with a compound lens system - means 2 lenses able to reveal a great amount of detail Gram staining - Answer A process by which components of bacterial cell walls are bound to Gram's stain. Depending on the amount of peptidoglycan in their cell walls, bacteria stain differently and are classified as Gram-negative or Gram-positive. gram postive bacteria - Answer LTA. More peptidoglycan. stain purple. staph and strep. enterotoxin A. lipid A is in lps which is the outer membrane of the gram positive bacteria color: Gram-negative bacteria - Answer Bacteria that have complex cell walls with less peptidoglycan but with lipopolysaccharides. Very toxic and hard to treat. pink/red morphology of bacteria - Answer Can either be a sphere, rod, or coils. Shape determined by cell wall Cocci - Answer sphere shaped bacteria usually lack flagella Bacillus - Answer Rod shaped bacteria