Leeuwenhock called small creature (microbes) as ___________? Bacterial spore produce within vegetative cells called __________? Cyanobacterium range in diameter from ________Um? Pili are made up of pilin which is? Pasteur's main achievements are the development of vaccines for diseases? 50 % of dry weight in some gram positive bacterial cells is? Permanent discoloration of teeth in young children is caused by _________ and its related compound?