Lactic acid fermentation occurs in
AAll aerobic eukaryotes always
BPlant root cells in normal soil
CYeast cells producing ethanol
DAnimal muscle cells in oxygen debt
Answer & Solution
Correct answer: D. Animal muscle cells in oxygen debt
Muscle cells convert pyruvate to lactate via lactate dehydrogenase when oxygen supply is inadequate (intense exercise). NADH is reoxidised to NAD+ so glycolysis can continue. Yeast also makes lactate in some species but classically makes ethanol.
Related questions
Reactions catalysed by pyruvic dehydrogenase require coenzyme A and:In fermentation, what proportion of the energy in glucose is released?In exercising muscle with inadequate oxygen, pyruvic acid is reduced to:Which two enzymes catalyse alcoholic fermentation?In fermentation by yeast, pyruvic acid is converted to carbon dioxide and:In anaerobic organisms, glycolysis is described as:Krebs cycle achieves the complete oxidation of glucose and is also called:The term glycolysis comes from Greek words for splitting and: