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Ch. 8 An Introduction to Metabolism
Vocab and Topic Review for Ch. 8 Cambell Biology Ninth Edition
8
Biology
Undergraduate 1
12/12/2011

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Term
Thermodynamics
Definition
  • Study of energy transformations in a system
  • Organisims=open systems
Term
Metabolic Pathway
Definition
Enzyme-compounds built up and broken down in small steps
Term
Catabolic Pathway
Definition
  • Energy released by breaking the bonds of larger molecules to form smaller molecules
Term
Anabolic Pathway
Definition
energy consumed to build larger molecules form simpler molecules; sometimes called biosynthetic pathways
Term
First Law of Thermodynamics
Definition
  • Amount of energy in universe is constant
  • Energy can neither be created or destroyed, only converted from one form to another
  • Energy used and released in any reaction must be balanced
Term
Second Law of Thermodynamics
Definition
  • Energy affected matter in universe is becoming random
  • Entropy (disorder) is increasing
  • Energy is tending toward heat
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