1 SURVEY OF BIOCHEMISTRY Introduction to Metabolism.

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SURVEY OF BIOCHEMISTRY

Introduction to Metabolism

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Metabolism is complex

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Nutrition: Food Intake & Use

• Autotrophs– Chemilithotrophs: get E from

oxidation of inorganic compounds– Photoautotrophs: get E from

photosynthesis

• Heterotrophs: E from oxidation of organic compounds

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Common Vitamins

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Key Minerals

• Req’d for a variety of metabolic processes

• Obtainable from diet and other sources

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Metabolism Overview

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Metabolism Overview

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Where does metabolism occur?

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Where does metabolism occur?

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Bioenergetics

• Bioenergetics deals with the release, storage and use of energy in biological systems.

See board for notes…

Study Section 1-3

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High Energy Compounds

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ATP - a Ubiquitous High Energy Compound

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Coenzyme A: A Thioester

Learn to draw this!

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Electron Carriers in Redox Reactions

• NAD+, NADP+, and FAD are oxidized forms• NADH, NADPH, and FADH2 are reduced forms

Learn to draw NADH and NADPH

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Electron Carriers in Redox Reactions

FAD

• NAD+, NADP+, and FAD are oxidized forms• NADH, NADPH, and FADH2 are reduced forms

Learn to draw this!

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Redox Reactions

• Half-cells• Which species is which?

– What is an oxidizing agent?– What is a reducing agent?– What is being oxidized?– What is being reduced?

• Nernst Equationknow what this is in general

See board for notesRemember concepts in general

Do not worry about calculations or applications for

Exam #2

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Reduction Potential