The following substances are products of fermentation - Scottish Highers Biology - Question 1 - 2018

In human muscle cells, the primary product of fermentation, specifically lactic acid fermentation, is lactate. Although ATP is produced during glycolysis which is part of cellular respiration, it is not a direct product of fermentation itself. Carbon dioxide is produced in alcoholic fermentation, but in the case of lactic acid fermentation (which occurs in muscle cells), carbon dioxide is not a product. Therefore, the correct answer is B: 1 and 2 only.