https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:respiration/x2a084a90105205d2:anaerobic-respiration/v/aerobic-anaerobic-respiration-pk 2025-12-18T03:40:48.390254156Z Aerobic & anaerobic respiration Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Aerobic & anaerobic respiration Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/KO7Y_vAhNXY.mp4/KO7Y_vAhNXY.mp4 786 Anaerobic respiration https://www.khanacademy.org/science/biology/cellular-respiration-and-fermentation/variations-on-cellular-respiration/v/lactic-acid-fermentation 2023-09-14T11:22:40.102153098Z Lactic acid fermentation Glycolysis breaks down glucose into two pyruvate molecules, producing ATP and reducing NAD to NADH. If oxygen is unavailable, lactic acid fermentation occurs, recycling pyruvate and NADH to produce more NAD+ for glycolysis. This process is common in organisms like lactobacillus, which is used in making yogurt, kimchi, and sauerkraut. Sal Khan video https://cdn.kastatic.org/googleusercontent/1A2fjm8uHMUaj7kDKXEuJPd8csAaSw629dfONoEmgqTH3dZW8poafZwSHp_5QRMQEVBwnr5t7keByoEb91mug83Y Lactic acid fermentation Glycolysis breaks down glucose into two pyruvate molecules, producing ATP and reducing NAD to NADH. If oxygen is unavailable, lactic acid fermentation occurs, recycling pyruvate and NADH to produce more NAD+ for glycolysis. This process is common in organisms like lactobacillus, which is used in making yogurt, kimchi, and sauerkraut. https://cdn.kastatic.org/ka-youtube-converted/lfeXuK8pbFw.mp4/lfeXuK8pbFw.mp4 682 Anaerobic respiration https://www.khanacademy.org/science/ap-biology/cellular-energetics/cellular-respiration-ap/a/fermentation-and-anaerobic-respiration 2025-11-12T15:50:39.509225734Z Fermentation and anaerobic respiration How cells extract energy from glucose without oxygen. In yeast, the anaerobic reactions make alcohol, while in your muscles, they make lactic acid. article https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:respiration/x2a084a90105205d2:anaerobic-respiration/a/lactic-acid-and-alcohol-fermentation 2022-03-29T13:57:08.96832312Z Lactic acid and alcohol fermentation Overview of the lactic acid and alcohol fermentation pathways, and their use in making industrial products. article https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:energy-and-matter-in-biological-systems/x230b3ff252126bb6:cellular-respiration/a/anaerobic-respiration-and-fermentation 2024-05-09T17:42:08.599818576Z Anaerobic respiration and fermentation Learn how organisms use anaerobic respiration and fermentation to release energy in food without the use of oxygen. article https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:respiration/x2a084a90105205d2:anaerobic-respiration/a/summary-of-cellular-respiration 2022-03-18T10:43:19.344568836Z Summary of Cellular Respiration Summary of cellular respiration article https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:respiration/x2a084a90105205d2:anaerobic-respiration/e/introduction-to-cellular-respiration-2 2026-04-07T23:55:07.30621384Z Summary of Cellular Respiration Cellular respiration Moumita Sen exercise