BB lecture 10-21-09 respiration I

BB lecture 10-21-09 respiration I - Chapter 9(pp.162-172...

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Chapter 9 (pp.162-172) – Cellular Respiration (aerobic respiration) Learning objectives • Write the general reaction that depicts aerobic respiration • Know how exergonic/endergonic rx, anabolic/catabolic rx, energy- coupled processes and ATP/ADP relate to metabolic pathways . Explain why synthesis pathways are coupled with degradation pathways . • Understand the concept of “high-energy electrons” • Know the roles coenzymes have in the metabolic pathways of cellular respiration • Be able to construct a table showing what “goes in” and what “comes out” of the glycolysis pathway Terms to know include…oxidation; reduction; oxidizing agent; reducing agent…
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High energy electrons: - electrons exist in clouds that are centered about atomic nuclei. Energy is distance: - electrons can accept and store energy - more energized electrons exist at a greater average distance from its atomic nuclei than the cloud of less energized electrons . Storage of energy: - the main energy foods (carbohydrates, fats) are reservoirs of electrons associated with hydrogen in the covalent bonds between H and C Transfer of stored energy [electron transfer]: - The stored energy associated with a high energy electron may be transferred away from that electron. - Particularly, the electron itself may be transferred from the molecule it occupies to a new molecule . - Transfer of electrons & associated hydrogens from one substance to another is called oxidation-reduction .
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Cells obtain energy…
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This note was uploaded on 01/20/2010 for the course BIO 50415 taught by Professor Batterton during the Spring '09 term at University of Texas.

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BB lecture 10-21-09 respiration I - Chapter 9(pp.162-172...

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