Absence of oxygen means anaerobic respiration ; which has 2 different pathways.
First Pathway ; Alcoholic fermentation which takes place in yeast.
Pyruvate is decarboxylated into ethanal releasing co2 as waste product.
Ethanal is toxic , so its reduced by help of NADH to ethanol in presence of alcohol dehydrogenase enzyme , and Free NAD is released to continue glycolysis.
2) The second pathway is Lactic fermentation which takes place in mammalian muscles.
Pyruvate accepts hydrogen and is converted to lactate by the help of enzyme lactate dehydrogenase , again free NAD is released to continue glycolysis.
Hope I made it clear enough :)
<span>The research shows that the use of antidepressant will be beneficial in a patient with major depression and </span><span>obsessive-compulsive disorder</span>.
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It should be clear that antidepressant works for depression, but some of them are used to treat OCD too. it has no effect on the antisocial, dissociative or schizophrenic patient though. </span>The SSRI drugs that could be used for OCD would be sertraline, fluoxetine, fluvoxamine, and p<span>aroxetine. </span><span>
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Answer:
Explanation:
A gene can be turned on or off by environmental factors or from other cells that activate proteins known as transcription factors.
Hello,
An increase in pollution [could] lead to a decrease in <span>genetic variation in a population of tuna.
Faith xoxo</span>
