Unit 2: The Cell Animations   Study Guide

Chapter 8 An Introduction to Metabolism Review
  1. consists of all the chemical reactions of an organism, organized into metabolic .
  2. Energy is associated with the relative of objects, and abides by laws of physics called .
    Review: Energy Transformations
  3. ATP drives chemical reactions for cellular work by , transferring a phosphate to other molecules, and is replenished by cellular (aerobic) .
  4. An is a protein that speeds up a reaction without being consumed by the reaction.
  5. An enzyme facilitates an reaction by lowering its energy.
  6. An enzyme is often activated when its substrate binds to the protein's site.
  7. An can be regulated by altering its shape in response to the binding of a molecule.
  8. Enzymes must be in the proper 3-dimensional (conformation) to be active. Factors that affect enzyme function include and , and most enzymes have an optimal temperature and pH range.
    Review: Chemical Reactions and ATP
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