January 1, 2020 Science Mcqs The micro-organism widely used in preparation of butter or cheese is? Posted by daily5techtips (a) Saccharomyces sp. (b) Mycobacterium so C Lactobacillus sp. (d) None of these See also Copper, zinc, fluorine, chromium, molybdenum and selenium are important parts of human food. By which name these are called?