The byproduct is lactic acid, which causes muscle fatigue. The chemical reaction transfers energy from glucose to the cell. - OCR 21C, How do organisms grow and develop? 1. The reaction therefore releases much less energy than aerobic respiration - around only a nineteenth of the energy released during aerobic respiration. What happens during anaerobic cellular respiration? Only 2 molecules of ATP energy can be created during anaerobic respiration. No CO ₂ is produced, since both pyruvate and lactic acid have 3 carbons. Anaerobic respiration is respiration without oxygen. The energy is produced in form of ATP (Adenosine Triphospahate). AP.BIO: ENE‑1 (EU), ENE‑1.K (LO), ENE‑1.K.1 (EK), ENE‑1.K.2 (EK), ENE‑1.L (LO), ENE‑1.L.1 (EK), ENE‑1.L.6 (EK), ENE‑1.L.7 (EK) How cells extract energy from glucose without oxygen. This method still incorporates the respiratory electron transport chain, but without using oxygen as the terminal electron acceptor. Anaerobic respiration is the type of respiration through which cells can break down sugars to generate energy in the absence of oxygen. The first stages of respiration occur in the cytoplasm of plant and animal cells, but most of the stages of respiration that release energy happen in the mitochondria. Cellular respiration can be carried out by two different pathways. RESPIRATION Q1. The cellular respiration that occurs in presence of oxygen is called aerobic respiration, and the one that occurs in absence of oxygen is anaerobic cellular respiration. The production of energy requires oxygen. Copyright © Biology Wise & Buzzle.com, Inc.