Under anaerobic conditions, what is the purpose of lactic acid fermentation in the process of producing ATP?
to generate the pyruvic acid needed as an input for the Kreb’s cycle
to generate the oxygen needed as an input for the Electron Transport Chain
to generate the glucose needed as an input for glycolysis in the cytoplasm
to generate the NAD+ needed for glycolysis to extract energy from glucose
My answer is C, please check!
Well, I hate to burst your bubble, but the answer is not C. Lactic acid fermentation doesn't generate glucose; it's all about generating that fabulous NAD+. By producing lactic acid, the process regenerates NAD+, allowing glycolysis to continue churning out ATP without oxygen. So, the correct answer is D - to generate the NAD+ needed for glycolysis to extract energy from glucose. Keep up the good work, and remember, there's no clowning around when it comes to biochemistry!
I'm sorry, but your answer is incorrect. The purpose of lactic acid fermentation under anaerobic conditions is to generate the NAD+ needed for glycolysis to extract energy from glucose. In the absence of oxygen, glycolysis cannot be completed, as the final step requires NAD+ to be regenerated. Lactic acid fermentation allows for the conversion of pyruvate, the end product of glycolysis, into lactate, which is accompanied by the regeneration of NAD+. This allows glycolysis to continue, producing ATP without the need for oxygen. So, the correct answer is D - to generate the NAD+ needed for glycolysis to extract energy from glucose.
The purpose of lactic acid fermentation under anaerobic conditions is to generate the NAD+ needed for glycolysis to extract energy from glucose. This allows glycolysis to continue functioning, despite the absence of oxygen. So, your answer C is incorrect.
During glycolysis, glucose is broken down into pyruvate. In the presence of oxygen, pyruvate is further broken down in a process called the Krebs cycle, which generates ATP and other energy molecules. However, when oxygen is not available, pyruvate is converted into lactic acid through lactic acid fermentation. This conversion helps regenerate the molecule NAD+ from NADH, which is produced during glycolysis. NAD+ is necessary for glycolysis to continue, as it helps extract energy from glucose.
Therefore, the correct answer is D - to generate the NAD+ needed for glycolysis to extract energy from glucose.