Bacteria, 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 a) phosphorylation. b) alcohol fermentation. c) lactic acid fermentation. d) the electron transport system.

Answer is C)lactic acid fermentation.

Lactic acid fermentation is a metabolic process by which sugar is converted into cellular energy and lactate or lactic acid in solution. No carbon dioxide is evolve in the process. This conversion is done by lactobacillus bacteria in absence of oxygen. The bacteria that make yogurt carry out lactic acid fermentation.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.