Microbiology 2 0.0 / 5 ? Biologymicrobiology 2UniversityOther Created by: LailaFrancisCreated on: 17-02-23 11:39 colour of gram negative? pink 1 of 17 colour of gram positive? purple 2 of 17 shape of bacilli rod 3 of 17 shape of cocci single sphere 4 of 17 shape of diplococci double sphere 5 of 17 shape of streptococci gathered spheres 6 of 17 gram positive osmolarity is what high 7 of 17 gram positive or negative? Need thicker cell wall (thick peptidoglycan) positive 8 of 17 gram positive or negative? Thinner but more complex cell wall (thin peptidoglycan) negative 9 of 17 which has 2 membranes? 2 bilayers negative 10 of 17 Peptidoglycan acts as a permeability barrier preventing loss of the initial stain called what? crystal violet 11 of 17 the decolorisation step is thought to shrink what? pores of the thick peptidoglycan and CV-I complex retained 12 of 17 Gram-negative bacteria have a thin layer of peptidoglycan, with less what cross-linking and larger pores 13 of 17 CV-I complex removed more easily through which wall G- 14 of 17 Without walls, Gram-positive organisms become? spherical protoplasts 15 of 17 Without walls, Gram-negatives become spheroplasts 16 of 17 what are variants that have lost the ability to synthesise a cell wall? L forms 17 of 17
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