Pls explain also every option
Dear student,
Metabolic water is released as a by product during aerobic respiration. Thus option 1 is wrong.
Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products. Hence option 2 is correct.
The process of fermentation results in the reduction of pyruvate to form lactic acid and the oxidation of NADH to form NAD+. Electrons from NADH and a proton are used to reduce pyruvate into lactate. Thus option 3 is correct.
Fermentation pathways end product can be organic acids, alcohols (like ethanol), or molecular hydrogen. It is not always organic acid. Thus option 4 is wrong.
But since the question states which of the options is never released as a by- product in fermentation, the most appropriate answer would be option 1. Since water is never released, but organic acids are produced during fermentation.
Hence option 1 is your answer.
Regards.
Metabolic water is released as a by product during aerobic respiration. Thus option 1 is wrong.
Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products. Hence option 2 is correct.
The process of fermentation results in the reduction of pyruvate to form lactic acid and the oxidation of NADH to form NAD+. Electrons from NADH and a proton are used to reduce pyruvate into lactate. Thus option 3 is correct.
Fermentation pathways end product can be organic acids, alcohols (like ethanol), or molecular hydrogen. It is not always organic acid. Thus option 4 is wrong.
But since the question states which of the options is never released as a by- product in fermentation, the most appropriate answer would be option 1. Since water is never released, but organic acids are produced during fermentation.
Hence option 1 is your answer.
Regards.