Is a 1950 ford sedan battery a positive or a negative ground? Why are gram-positive bacteria purple in colour while gram negative are red? Gram-positive bacteria have a thick mesh-like cell wall which is  made up of peptidoglycan (50-90% of cell wall), which stains  purple.
If you talk about best schools in delhi ncr â Shri Ram School and DPS schools chains dominate top rankings. However Amity School is also considered in top schools. Being from Gurgaon and an alumni of DPS SECTOR 45 I can say DPS Sector 45, Sushant Lok are still the best schools in gurgaon particularity.
1 Successful school leadership is not about knowing all the answers, it is about knowing where to look for the answers â and in this The Key is invaluable. 2  Peter Kent, Headteacher, Lawrence Sheriff School, Warwickshire. The Key helped us to get outstanding in our Ofsted... 2  The Key is kept so up to date, unlike any other info out there. 3  Rosie Mirecki, Headteacher, Elm Hall Primary School, Essex.