Biology
Effect Of Environment PH On Enzyme Activity
This experiment is to demonstrate how the activity of enzymes changes with the change of environment's PH.
Mission
This experiment is to demonstrate how the activity of enzymes changes with the change of environment’s PH
Curriculum Alignment
| Standard | Syllabus code | Topic | Coverage | Grades | |
|---|---|---|---|---|---|
| NGSS | No dedicated NGSS PE for enzyme-pH kinetics | Weak | 9–12 | ||
| British / IGCSE | CAIE 0610 5.1.5 / Edexcel 4BI1 2.14B | Effect of pH on enzyme activity | Partial | 9–10 | |
| IB | 2.5 Enzymes | Experimental investigation of a factor affecting enzyme activity (Practical 3) | Full | 11–12 | |
| CBSE | Class 11 Ch.9 Biomolecules | Enzyme -- types, properties, enzyme action | Partial | 11–11 | |
| AERO / AP | AP Bio 3.2 Environmental Impacts on Enzyme Function | Environmental factors (temperature, pH, substrate concentration, inhibitors) affect enzyme activity | Partial | 9–12 |
Variables
What you change
- PH of solutions
What you measure
- Efficiency of enzymes’ function (level of carbon dioxide)
What you keep constant
- Humidity
- Volume and concentration of sugar solution
- Amount of enzyme (mass of yeast)
- Time
What You'll Need
- Breadboard 400 Tie Point
- Arduino Uno
- I2C LCD
- Waterproof Temperature Sensor (Stainless Steel Probe)
- pH Sensor Electrode Probe BNC
Estimated Time
Virtual mode 22 minTest mode 32 minExercise mode 29 min
Mind-Blowing Fact
Eat well. Eat smart.
The aquatic fern found in Australia, Nardoo, can lead to starvation if consumed when it is not prepared right. This is because the plant contains high levels of the enzyme that destroys thiamine. This stops the body from getting nutrients from food even if a person eats a fully nutritious diet.
How You Can Run It
Virtual modeTest modeExercise modeView-only modeAccessibility modeTobii eye trackingVoice commandsAmericanBritishIB