What are the uses and sources of the 4 elements needed in large amounts for microbial growth?
Elements: Carbon, Nitrogen, Sulfur, and Phosphates
Carbon: builds "backbone" of all biological molecules-various sugars, peptone (partially hydrolyzed protein)
Nitrogen: essential component of proteins (-NH2 (amino) groups) and nucleotides (nitrogenous bases: ATCGU)-peptone
Sulfur: essential component of certain a.a.s. (cysteine, methionine), and acetyl CoA-peptone
Phosphates: essential component of nucleotides, including ATP-phosphate salts