The correct answer is: pyruvic acid<\/strong>.<\/p>\n\n\n\n Lactic acid fermentation is an anaerobic metabolic process used by certain cells to generate energy when oxygen is not available. In this process, pyruvic acid<\/strong> acts as the final electron acceptor.<\/p>\n\n\n\n During glycolysis, one molecule of glucose is broken down into two molecules of pyruvic acid. This process produces a small amount of ATP (adenosine triphosphate) and reduces NAD+ to NADH. However, in the absence of oxygen, the cell cannot use the electron transport chain to regenerate NAD+ from NADH. Without NAD+, glycolysis would stop, and energy production would cease.<\/p>\n\n\n\n To solve this problem, cells performing lactic acid fermentation use pyruvic acid as an internal electron acceptor. NADH donates its electrons to pyruvic acid, reducing it to lactic acid<\/strong>. This reaction is catalyzed by the enzyme lactate dehydrogenase<\/strong>. The chemical equation for this step is:<\/p>\n\n\n\n Pyruvic acid + NADH \u2192 Lactic acid + NAD+<\/strong><\/p>\n\n\n\n The key purpose of this step is to regenerate NAD+, which is essential to keep glycolysis going. By continuously converting pyruvic acid into lactic acid, the cell ensures a steady supply of NAD+ for glycolysis to proceed, allowing ATP production to continue even when oxygen is not available.<\/p>\n\n\n\n This type of fermentation occurs in certain bacteria, like Lactobacillus<\/em>, and in human muscle cells during intense exercise when oxygen levels are low. The accumulation of lactic acid in muscle cells can lead to temporary fatigue and soreness.<\/p>\n\n\n\n To summarize, pyruvic acid is the final electron acceptor in lactic acid fermentation<\/strong>, accepting electrons from NADH to form lactic acid. This allows cells to maintain energy production under anaerobic conditions by sustaining glycolysis through the regeneration of NAD+.<\/p>\n\n\n\n What is the final electron acceptor in lactic acid fermentation? NADH acetaldehyde pyruvic acid lactic acid The Correct Answer and Explanation is: The correct answer is: pyruvic acid. Explanation Lactic acid fermentation is an anaerobic metabolic process used by certain cells to generate energy when oxygen is not available. In this process, pyruvic acid acts […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-35308","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/35308","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=35308"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/35308\/revisions"}],"predecessor-version":[{"id":35318,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/35308\/revisions\/35318"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=35308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=35308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=35308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Explanation <\/h3>\n\n\n\n
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