BIOL 211 - CELLULAR AND ORGANISMAL BIOLOGY

Lecture Outline for February 7, 2005

 

Topic: energy, metabolism, enzymes

Chapter 5 all section 3

Figures used in lecture: 5.5, 5.9, 5.10, 5.12, 5.15, 5.16

Additional Resources

 Electron Carriers - NAD and NADP

ATP as an energy carrier

 

A.  ENERGY

Key Words

energy, kinetic energy, potential energy, thermodynamics

 

You should be able to explain the First and Second Laws of thermodynamics and how they relate to metabolic reactions.

 

B.  METABOLISM

Key Words

metabolism, reactants, products, endergonic, exergonic, anabolic, catabolic, ATP, ADP, redox reactions, reduction, oxidation, electron carriers, coupled reactions

 

You should be able to:

1.  Describe any given reaction as catabolic or anabolic.

2.  Explain the relationship between an anabolic and an endergonic reaction.

3.  Explain the relationship between a catabolic and an exergonic reaction.

4.  Describe the redox reactions that occur when energy is being transferred to an electron carrier such as NAD+.

5.  Recognize the structure of ATP and explain how it carries energy.

6.  Describe the energy transfers that occur between coupled reactions.

 

C.  ENZYMES

Key Words

catalyst, enzyme, substrate, enzyme-substrate complex, product, active site, activation energy, enzyme specificity

 

You should be able to

1.  Explain why enzymes are required for metabolic reactions.

2.  List and explain the properties of enzymes.

3.  Describe the interaction of an enzyme and a substrate at the active site.

4.  Explain the factors that can alter enzyme specificity and hinder enzyme function.