Cellular_Respiration (1).pptx - Cellular Respiration BIOL...

Cellular Respiration
BIOL 011

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Extracts and utilizes energy from glucose and oxygen to produce ATP
Cellular Respiration

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Reducing agent
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Oxidizing agent
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Electron carriers
o
NAD+
• Oxidized form of niacin
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NADH
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Reduced form
Electrons and Energy
The structure of NADH and NAD+
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Cellular Respiration > Energy in Living Systems

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Cells require a constant supply of energy to survive
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Cells store energy in the form of adenosine triphosphate, or ATP.
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Energy is released when the terminal phosphate group is removed from ATP.
ATP in Living Systems
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Adenosine triphosphate.
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Cellular Respiration > Energy in Living Systems

Cellular Respiration
Glycolysis is the first pathway of cellular respiration that oxidizes glucose molecules.It is followed by the Krebs cycle and oxidative
phosphorylation to produce ATP.
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Cellular Respiration

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In glycolysis, a glucose molecule
is converted into two pyruvate
molecules .
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This occurs in the cytoplasm
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This process will occur in the
presence or absence of O2

Overview of Glycolysis
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Cellular Respiration > Glycolysis

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Although four ATP molecules are produced in the second half, the net
gain of glycolysis is only two ATP
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Enzymes that catalyze the reactions that produce ATP are rate-limiting
steps of glycolysis
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Glycolysis produces: four ATP, two NADH, and two pyruvate
molecules for each glucose molecule that enters the pathway.
Outcomes of Glycolysis
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Cellular Respiration > Glycolysis

Cellular Respiration