21
Question
The energy releasing metabolic process in which substrate is oxidized without any external electron acceptor is called ____.
The energy releasing metabolic process in which substrate is oxidized without any external electron acceptor is called ____.
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Solution
The correct option is B Fermentation
In fermentation, the incomplete oxidation of glucose is achieved under, anaerobic condition by set of reactions, where pyruvic acid is converted into carbon dioxide and ethanol. The enzyme, pyruvic acid decarboxylase and alcohol dehydrogenase catalyse these reactions.
In aerobic respiration, the substrates are oxidised in the presence of an external electron acceptor, that is oxygen. Whereas anaerobic respiration, is carried out in the absence of oxygen, therefore they do not have any external electron acceptor. Instead the glycolytic product itself is further used as an electron acceptor to regenerate NAD+.
In fermentation, the incomplete oxidation of glucose is achieved under, anaerobic condition by set of reactions, where pyruvic acid is converted into carbon dioxide and ethanol. The enzyme, pyruvic acid decarboxylase and alcohol dehydrogenase catalyse these reactions.
In aerobic respiration, the substrates are oxidised in the presence of an external electron acceptor, that is oxygen. Whereas anaerobic respiration, is carried out in the absence of oxygen, therefore they do not have any external electron acceptor. Instead the glycolytic product itself is further used as an electron acceptor to regenerate NAD+.
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