1. acetyl CoA. These physiological pathways are called energy systems, and the most important of these for endurance athletes is the aerobic energy system.Let’s take a closer look at how your body utilizes the aerobic system to power you on your bike, and how you can train this system to be more efficient and effective. how does it occur ? The processes of _____ would yield the highest number of ATP. Is respiration and breathing same? Energy metabolism. The human body has 3 main methods for using energy to sustain itself and fuel exercise. Aerobic metabolism is 19 times more efficient than anaerobic metabolism (which yields 2 mol ATP per 1 mol glucose). A) glycolysis B) fermentation C) oxidative phosphorylation (electron transport chain) D) the Krebs Cycle 1. Anaerobic respiration is the process of partial breakdown of fuel (glucose) in absence of oxygen. Pyruvate is the output of the anaerobic metabolism of glucose known as glycolysis. ☆ Anaerobes require an absence of oxygen and presence of different nutrients from the aerobic counterparts Aerobic respiration refers to complete breakdown of metabolic fuels in presence of oxygen. Learn more about respiration. What is respiration ? Unlike aerobic exercise, which uses oxygen for a sustained workout, anaerobic training lasts only seconds to at most two minutes. They share the initial pathway of glycolysis but aerobic metabolism continues with the Krebs cycle and oxidative phosphorylation. Aerobic Respiration :-The respiration which takes place in the presence of oxygen is known as the aerobic respiration.. Ex:-Respiration in humans, fish ,and other animals are considered to be aerobic respiration.. Anaerobic Respiration:-. - 6483676 Answer: Cellular respiration is a collection of three unique metabolic pathways: glycolysis, the citric acid cycle, and the electron transport chain. metabolism. Anaerobic respiration is a process of cellular respiration where the high energy electron acceptor is neither oxygen nor pyruvate derivatives. Brainly User Brainly User ☆ The presence of oxygen , nutrients and space to discard their metabolic products are the conditions for cellular respiration in aerobic organisms . Anaerobic exercise is a very short, very intense exercise that doesn't use oxygen for fuel. Both aerobic and anaerobic respiration yield a net gain of ATP molecules to be used as energy for living things. In anaerobic respiration, the electron acceptor can be sulfate ion (SO 4 – ) or nitrate ion (NO 3 – ) or a variety of other molecules. 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