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  1. Fermentation and anaerobic respiration - Khan Academy

    This process, called anaerobic cellular respiration, is performed by some bacteria and archaea. In this article, we'll take a closer look at anaerobic cellular respiration and at the different types of …

  2. Cellular respiration | Biology archive | Science | Khan Academy

    This unit is part of the Biology archive. Browse videos and articles by topic. For our most up-to-date, mastery-enabled courses, check out [High School Biology](https ...

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  4. Intro to cellular respiration (article) | Khan Academy

    Cellular respiration is a biological process in which cells break down glucose in the presence of oxygen, releasing stored chemical energy. This energy can be used to power cellular processes.

  5. Steps of cellular respiration | Biology (article) | Khan Academy

    Glycolysis can take place without oxygen in a process called fermentation. The other three stages of cellular respiration—pyruvate oxidation, the citric acid cycle, and oxidative …

  6. Connections between cellular respiration and other pathways

    Whether it's better to "burn" molecules for fuel via cellular respiration or use them to build other molecules depends on the needs of the cell—and so does which specific molecules they're …

  7. Cellular respiration introduction | Biology (video) | Khan Academy

    Cellular respiration is the process by which cells derive energy from glucose. The chemical reaction for cellular respiration involves glucose and oxygen as inputs, and produces carbon …

  8. Alcohol or ethanol fermentation (video) | Khan Academy

    When oxygen isn't available, organisms can use lactic acid fermentation or alcohol fermentation to recycle NADH back to NAD+. In alcohol fermentation, pyruvate loses a carboxyl group, …

  9. Summary of Cellular Respiration (article) | Khan Academy

    When oxygen runs low, our muscle cells can produce ATP using lactic acid fermentation. However, this can happen only for short periods of strenuous exercises, like running a sprint.

  10. Cellular respiration review (article) | Khan Academy

    Fermentation is the anaerobic process of producing ATP, so yes, it counts as cellular respiration. However, it is anaerobic, meaning it does not use oxygen to produce ATP.