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darksith77 darksith77
wrote...
10 years ago
a. identify and briefly explain the overall chemical reaction of respiration
b. identify and briefly describe the 3 MAIN stages of this process
c, Identify the EXACT place in the cell/organelle where each main stage occurs
d. State the role of the following molecules: glucose, pyruvate, electron carriers, coenzymeA, ATP                             synthase turbine protein,
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wrote...
10 years ago
a.  C6H12O6 +6O2 ---> 6CO2+ 6H2O + ATP / HEAT , from this equation we can summarize the overall cellular respiration. Glucose is degraded exergonically  and oxygen is consumed as a reactant. Through series of steps 6CO2 is created in the Kreb's Cycle( Citric Acid cycle) and water is created in the electron transport chain and ATP energy is also created in the ETC.

b.  -Glycolysis - Glucose is degraded into Pyruvic Acid by oxidizing two molecules of ATP and the net gain of Glycolysis is 2 ATP.
 
- Kreb's Cycle - Citrate ( 6 carbon molecule) is degraded through series of cascade reactions producing 2 ATP in two turns of the Kreb's cycle and 6 NADH are created in 2 turns of the Kreb's cycle and 4 CO2 are created in 2 turns of the Kreb's cycle.

Electron Transport Reaction - NADH (electron carrier molecule) lends two electrons to the proteins embedded into the plasma membrane , e-s move across the plasma membrane, in doing so the protons move down their concentration gradient into the intermembrane space and lastly water is created. From the intermembrane the protons move down their concentration gradient again diffusing through the ATP synthase  producing ATP.

c. - Glycolysis - Cytoplasm
- Kreb's Cycle - Mitochondrial Matrix
- ETC - Mitochondrial Matrix/ Intermembrane Space

d.  Glucose - Is degraded and is the molecule and supplies energy to the cell.
Pyruvate - The end product of glycolysis. Pyruvate is a 3-carbon 2 molecule.
 Electron Carrier (NADH) - This molecules carries electrons to the ETC is created in Glycolysis/ Transition reaction and Kreb's Cycle.
CoEnzyme A - Assists  in the synthesis of Citric Acid the beginning product of Kreb's Cycle. Brings the Pyruvate to the Kreb's cycle.
ATP Synthase - A protein that is embedded in the plasma membrane separating the intermembrane space and the mitochondrial matrix through which protons diffuse making ATP.
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