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BIOL 1543, Chapter 6

by: Kenzie Miller

BIOL 1543, Chapter 6 BIOL 1543

Marketplace > University of Arkansas > Biology > BIOL 1543 > BIOL 1543 Chapter 6
Kenzie Miller
GPA 4.0

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About this Document

These notes cover major topics from class that are in chapter 6.
Principles of Biology
Dr. Shadwick
Class Notes
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This 8 page Class Notes was uploaded by Kenzie Miller on Friday September 30, 2016. The Class Notes belongs to BIOL 1543 at University of Arkansas taught by Dr. Shadwick in Fall 2016. Since its upload, it has received 21 views. For similar materials see Principles of Biology in Biology at University of Arkansas.


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Date Created: 09/30/16
Chapter 7: Cellular Respiration Highlight​ = Key Term Highlight​ = Major Concept Cellular Respiration ● Release of energy from molecules (such as glucose) accompanied by energy to synthesize ATP molecules ● Aerobic ​- requires O2 ● Gives off CO2 -C 6 12+66O → 2CO + 6H 2 2 -Glucose Oxygen → Carbon dioxide water -ATP + P → 36-38 ATP NAD+ and FAD ● Cellular respiration involves many reactions, which ​ equire enzymes ○ Certain enzymes use 2 coenzymes ■ NAD+ ■ FAD ○ Each carries 2 electrons and 2 hydrogen atoms ○ Pick up electrons at enzymatic reactions and carry electrons to the electron transport chain Phases for Cellular Respiration ● Glycolysis ● Preparatory reaction ● Citric acid cycle (Krebs cycle) ● Electron transport chain What could the first cells probably perform that require oxygen? Glycolysis Glycolysis​ (outside the mitochondria) ● The ​breakdown of glucose to 2 pyruvate molecules ○ Takes place in cytoplasm ○ Does NOT require oxygen ○ From one 6-carbon molecules → two 3-carbon molecules ● Energy investment steps ○ 2 molecules of ATP used to activate glucose for glycolysis to begin ● Energy harvesting steps ○ Oxidation​ of G3P results in NADH synthesis ○ Chemical changes lead to direct substrate-level phosphorylation, formation of 4 ATP ● Substrate level ATP synthesis


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