CELL RESPIRATION
THE KREBS CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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transport water molecules across the membrane
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convert ADP molecules to ATP molecules
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convert carbon dioxide into water molecules
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break down glucose into pyruvic acid molecules
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Detailed explanation-1: -As electrons move through the electron transport chain, they go from a higher to a lower energy level and are ultimately passed to oxygen (forming water).
Detailed explanation-2: -The ETC is a collection of proteins bound to the inner mitochondrial membrane and organic molecules, which electrons pass through in a series of redox reactions, and release energy. The energy released forms a proton gradient, which is used in chemiosmosis to make a large amount of ATP by the protein ATP-synthase.
Detailed explanation-3: -For aerobic respiration, the electron transport chain or “respiratory chain” is embedded in the inner membrane of the mitochondria (see figure below). The FADH2 and NADH molecules produced in glycolysis and the Krebs Cycle, donate high-energy electrons to energy carrier molecules within the membrane.
Detailed explanation-4: -ANSWER: In cellular respiration, high energy electrons which moves through an electron transport chain originates in glucose. EXPLANATION: These are moved through the transport chain by NAD+ and FAD which eventually become NADH and FADH2.