Acteria, like the lactobacillus acidophilus use sugar as an energy source for anaerobic cellular respiration. this process produces much less atp than aerobic respiration and does not produce carbon dioxide as a by-product. it does, however, give yogurt its sour taste and prevents other food spoiling bacteria from developing. this is a description of

The correct answer is lactic acid fermentation.

Lactic acid fermentation refers to a metabolic procedure by which glucose and other six-carbon sugars, like lactose or sucrose are transformed into cellular energy and the metabolite lactic acid that is a lactate in solution.

It is an anaerobic fermentation reaction, which takes place in certain kinds of bacteria and animal cells, like muscle cells.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.