Experiments

Here are experiments our science specialists have selected to support this IB* topic.

Cellular Respiration

Experiment #9 from Investigating Biology through Inquiry

In this Preliminary Activity, you will use a CO₂ Gas Sensor to determine the respiration rate of peas. After completing the Preliminary Activity, you will first use reference sources to find out more about peas, seeds, germination, and cell respiration before you choose and investigate a researchable question dealing with the cell respiration. Some topics to consider in your reference search are:

• peas
  
• seeds
  
• germination
  
• cell respiration
  
• carbohydrates
  
• glucose
  
• dormant
  

Cell Respiration (CO₂)

Experiment #11B from Biology with Vernier

In this experiment, you will

• Use a CO₂ Gas Sensor to measure concentrations of carbon dioxide.
• Study the effect of temperature on cell respiration.
• Determine whether germinated and non-germinated peas respire.
• Compare the rates of cell respiration in germinated and non- germinated peas.

Educational Standard

International Baccalaureate (IB) 2025

Subject

Biology

Theme

D Continuity and change

Level of organization

3 Organisms

Topic

D3.1 Reproduction

Section

Standard level and higher level