What This Document Is
This document outlines a laboratory experiment – Week Two of a two-part series – for a Survey of Chemistry II course (CHEM 1152K) at Georgia Gwinnett College. The lab focuses on enzymology, specifically investigating how varying substrate concentration impacts enzyme activity and product formation. It builds directly on concepts and procedures introduced in the previous week’s lab.
Why This Document Matters
This lab is essential for students enrolled in CHEM 1152K who need hands-on experience with enzyme kinetics. Understanding enzyme activity is a core principle in biochemistry and has broad applications in fields like medicine, biotechnology, and environmental science. This experiment allows students to apply theoretical knowledge to a practical setting, developing skills in experimental design, data collection, and analysis. It’s used to reinforce understanding of reaction rates and the factors influencing them.
Common Limitations or Challenges
This document provides the experimental protocol and data analysis framework. It does *not* provide background information on enzyme kinetics, detailed explanations of the underlying biochemical principles, or pre-calculated results. Students will need to have a foundational understanding of enzymology from lectures and the first lab session to successfully complete this experiment. It also assumes access to laboratory equipment and instructor guidance for using Excel.
What This Document Provides
The full document includes: a detailed experimental procedure for preparing a reaction cocktail without substrate, a dilution series for the substrate pNPP, a protocol for measuring product formation using spectrophotometry, tables for recording data (including enzyme concentration, substrate dilution, and absorbance readings), instructions for graphing data in Excel, and questions requiring calculations related to enzyme velocity and substrate concentration. It also includes a table outlining the dilutions and expected substrate concentrations. This preview does *not* include the completed data tables, graphs, calculations, or answers to the questions.
