Ch 8-Metabolism

Question 1

Explain Metabolic Pathways and Describe the Two Major Types

Answer 1

• Begins With a Specific Molecule and Ends With a Product
  
  • Catalyzed by a Specific Enzyme
• Types
  
  • Catabolic Pathways
    
    • Breakdown Complex Molecules into Simpler Compounds
  • Anabolic Pathways
    
    • Build Complex Molecules from Simpler Ones.

Question 2

How Chemical Reactions Play a Role in Energy Transfer

Answer 2

Chemical Reactions are Spontaneous and Release Energy, Wheras Others Require Energy to Proceed. Living Things Continually Consume Food to Replenish What has Been Used, Cells Must Continually Produce More Energy to Replenish That Used by the Many Energy-Requiring Chemical Reactions that Constantly take Place.

• Bioenergetics is the term for this explanation

Question 3

Define Energy

Answer 3

Capacity to Casue Change

Question 4

Endergonic and Exergonic Reactions

Answer 4

• Endergonic Reaction
  
  • Absorbs Energy from its Surroundings
  • Anabolism
• Exergonic Reaction
  
  • Proceeds with a Net Release of Energy
  • Catabolism

Question 5

Structure of ATP and How Energy Releases Through ATP Hydrolysis

Answer 5

• Breakdown of ATP is used to Power Many Energy-Requiring Cellular Reactions

Question 6

The Role of Enzymes in Metabolic PathWays

Answer 6

Help to Break down Large Nutrient Molecules, Such as Proteins, Fats, and Carbohydrates, into smaller Molecules.

Other Enzymes guide the smaller, Broken-Down Molecules Through the Intestinal Wall into the Bloodstream.

Question 7

How do Enzymes Function as Molecular Catalysts

Answer 7

Question 8

Enzyme Regulation by Various Factors

Answer 8

• Temperature
• pH
• Chemicals