chapter 6: energy and metabolism i)laws of energy ii)basic energy use by life iii)enzymes
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First Law: Conservation of Energy1. Cannot be created or deleted2. Can be changed from one form to another (transformed)
Second Law: Energy moves towards chaos (entropy).
1. If energy is not put into a system, the system disintegrates (becomes more chaotic).
2. Scientific name for chaos is entropy: how much energy in the system has lost its usefulness
Energy Flow For Life1. Energy is needed to keep complex life processes from
decaying.2. Life depends on the sun to add energy to life.3. Living organisms lose (waste) energy when they give off heat.
CofactorsIon Examples of enzymes containing this ion
Cupric Cytochrome oxidase
Ferrous or Ferric
CatalaseCytochrome(via Heme)NitrogenaseHydrogenase
MagnesiumGlucose 6-phosphatase
Hexokinase
Manganese Arginase
Molybdenum Nitrate reductase
Nickel Urease
Selenium Glutathione peroxidase
ZincAlcohol dehydrogenase
Carbonic anhydraseDNA polymerase