Aerobic respiration involves the
catabolism of glucose to release the energy stored in the chemical
bonds of glucose. This energy is captured to produce ATP from ADP +
Pi (Oxidative phosphorylation).
It includes four major steps.
i. Glycolysis: Glucose to 2 Pyruvate
Net yield = 2 ATP and 2 NADH
ii. Transition reaction: 2Pyruvate
to 2 Acetyl CoA
Net yield = 2 NADH
iii. TCA cycle: 2 Acetyl CoA to 4
CO2
Net yield = 6 NADH, 2 FADH2 and 2 ATP
iv. Electron transport chain:
Electrons from the respiratory substrates are captured by NAD+ and
FAD which get reduced to produce NADH and FADH2. These reduced
coenzymes bring these electrons to the electron transport chain and
pass them to the electron carriers located in the inner
mitochondrial membrane.
Molecular oxygen is the ultimate electron acceptor in aerobic
respiration.
2H+ + 2e- + 1/2 O2 ---->
H2O
As electrons flow through ETC,
protons are pumped across the membrane to generate a proton
gradient which is coupled to produce ATP by ATP synthase
complex.
2. Trace the pathway of electrons all the way from glucose to O2, through cellular respiration....
Question 6 During aerobic respiration, which of the following answer choices correctly models the flow of electrons through cellular respiration? Select only ONE answer choice. food → citric acid cycle ATP NAD+ food →NADH → electron transport chain → H2O glucose ATP → electron transport chain → NADH food → glycolysis →citric acid cycle → ATP → NADHQuestion 7 At the end of the Citric Acid Cycle, where is most of the energy that was contained in the chemical bonds of glucose? Select only ONE answer choice. In...
Describe the pathway of free glucose in the bloodstream through its complete oxidation to CO2 and H2O during cellular respiration. Include relevant signaling molecules, metabolic pathways, key intermediates and locations of all metabolic steps.
What is the overall purpose of cellular respiration? to produce ATP by using the electrons from glucose to build the ATP molecule to produce ATP by using oxygen to build the ATP molecule to break down glucose and convert it into ATP to produce ATP using the energy from the oxidation of a glucose molecule
Question 4 Cellular respiration results in the release of energy from glucose. What is this released energy most often used for? The energy is used to break down fatty acids and triglycerides The energy is used to concentrate water molecules within the cell The energy is used for ATP hydrolysis. The energy is used to form a bond between ADP and Pi The energy is used to produce carbon dioxide and oxygenQuestion 5 During the process of cellular respiration, the majority of the chemical energy that is...
The electrons that are transferred through the electron transport system in cellular respiration initially belonged to Multiple Choice Ο glucose. Ο () ATP. Ο Oxygen. Ο ATP synthase. Ο CO2.
Complete the sentences with the appropriate words. electrons Cellular respiration is the extract energy of organic compounds to redox and an atom neutrons An atom that loses electrons is accepting electrons is increased from the substrate along NAD+ accepts a pair of with a to form NADH. proton oxidized Cells use enzyme-facilitated reactions to take energy from food sources and convert it to ATP. reduction Energy is cellular respiration. during each transfer of electrons in released oxidation anabolic reduced absorbed
Question 25 1 pts In which step of cellular respiration is most of the energy harvested from the glucose molecule? Glycolysis ETC Citric Acid Cycle Pyruvate Oxidation Question 26 1 pts In which step of cellular respiration is most of the energy that was harvested from glucose transformed into an energy source that can be used to do cellular work? ETC ATP Synthase Citric Acid Cycle Question 27 1 pts At the end of all 3 steps of cellular respiration,...
Cellular respiration: The Electron Transport Chain The breakdown of glucose ends during the Krebs cydle; however, it is important to note that the energy previously contained in glucose is mostly stored in NADH and FADHz. In the last step of celular respiration, the high-energy electrons within NADH and FADH2 are passed within a set of proteins found in the inner membrane of the mitochondrion, collectively known as the electron transport chain. The electrons provide the energy to create ATP, which...
From the following which is true about cellular respiration (select all that apply) 1. In prokaryotes, the electrons transport is in the plasma membrane 2. Prokaryotic fermentation net yield is 4 ATP and oxidative respiration has 32 ATP 3. The major regulatory enzyme of glycolysis is Hexokinase 4. Substrate-level phosphorylation is catalyzed by kinase and transfers the phosphate group from an intermediate in a metabolic pathway directly to a molecule of ADP
From the following which is true about cellular respiration (select all that apply) 1. In prokaryotes, the electrons transport is in the plasma membrane 2. Prokaryotic fermentation net yield is 4 ATP and oxidative respiration has 32 ATP 3. The major regulatory enzyme of glycolysis is Hexokinase 4. Substrate-level phosphorylation is catalyzed by kinase and transfers the phosphate group from an intermediate in a metabolic pathway directly to a molecule of ADP B) Which statement is false about phosphate esters...