SURVEY OF BIOCHEMISTRY Introduction to Metabolism

1
SURVEY OF BIOCHEMISTRYIntroduction to
Metabolism
2
Metabolism is complex
3
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

4
Common Vitamins
5
Key Minerals

• Reqd for a variety of metabolic processes
• Obtainable from diet and other sources

6
Metabolism Overview
7
Metabolism Overview
8
Where does metabolism occur?
9
Where does metabolism occur?
10
Bioenergetics

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

See board for notes Study Section 1-3
11
High Energy Compounds
12
ATP - a Ubiquitous High Energy Compound
13
Coenzyme A A Thioester
Learn to draw this!
14
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
15
Electron Carriers in Redox Reactions

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

FAD
Learn to draw this!
16
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 notes Remember concepts in
general Do not worry about calculations or
applications for Exam 2
17
Reduction Potential