Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Q2: What is the maximum initial reaction rate for this enzyme at pH 7?
Transcribed Image Text:### Effect of pH and Amount of Substrate
In scientific experiments, it is essential to observe how various conditions affect reactions or behaviors. The following table represents the interaction between pH levels and the amount of substrate, illustrating the results in numeric values.
**Table: pH and Amount of Substrate**
| Amount of Substrate | pH 3 | pH 5 | pH 7 | pH 9 | pH 11 |
|---------------------|------|------|------|------|-------|
| 0.5 g | 19 | 39 | 72 | 45 | 24 |
| 1.0 g | 39 | 81 | 145 | 91 | 49 |
| 2.0 g | 82 | 168 | 300 | 189 | 103 |
| 4.0 g | 96 | 198 | 350 | 223 | 121 |
| 8.0 g | 96 | 198 | 350 | 223 | 121 |
#### Explanation:
1. **Column Headers**: Each column header indicates the pH level.
2. **Row Headers**: Each row header represents the amount of substrate (in grams).
3. **Table Data**: The numbers in the table indicate the results observed for different combinations of pH levels and substrate amounts. For instance, at pH 7 and with 2.0 grams of substrate, a value of 300 is observed.
### Analysis:
- **pH Variation**: The values generally increase with the amount of substrate for each respective pH level.
- **Substrate Influence**: Higher substrate amounts show an upward trend in observed values until 4.0 grams, where further increases (at 8.0 grams) do not lead to higher observations and remain constant.
This tabular data helps in understanding the relationship between substrate quantity and pH levels in various experimental setups. Such a table is essential for learners to comprehend how different variables interact in scientific studies.
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