Featured in PASCO’s College Biology Instructor Guide

College Biology Instructor Guide

(PS-3800A)

College Instructor edition with 26 experiments covering introductory and general biology topics.

Cellular Respiration

Lab Summary

Use the carbon dioxide and oxygen gas sensors to measures changes in gas levels in a PASCO Metabolism Chamber containing respiring peas.

Theory

Students use oxygen gas consumption and carbon dioxide gas production as measures of seed respiration rates.

  • Students compare the rate of cell respiration in germinating versus dormant pea seeds.
  • Students determine the effects of temperature on the rate of cell respiration in germinating pea seeds.

Downloads

  • Cellular Respiration (Teacher and Student) (335 KB – PDF)
  • Method

    Students gain experience conducting the following procedures:

    • Using the carbon dioxide gas sensor to measure changes in CO2 levels in a Metabolism Chamber containing respiring pea seeds.
    • Using the oxygen gas sensor to measure changes in O2 levels in a Metabolism Chamber containing respiring pea seeds.
    • Calculating the respiration rate of germinating versus non-germinating pea seeds.
    • Calculating the respiration rate of germinating pea seeds exposed to differing temperatures.

    Sensors / Equipment Used:

    PASPORT Oxygen Gas Sensor

    (PS-2126A)

    The Oxygen Gas Sensor accurately measures O2 concentration in the atmosphere or in enclosed spaces. Study animal, plant or cellular respiration, air quality, O2 production from chemical reactions and more.

    PASPORT Carbon Dioxide Gas Sensor

    (PS-2110)

    The PASPORT Carbon Dioxide Gas Sensor measures carbon dioxide concentration CO2 (parts per million) in gases such as air. Ideal for studies of photosynthesis, respiration, fermentation and more.

    PASPORT Sensor Extension Cable

    (PS-2500)

    Allows an additional two meter length extension on all PASPORT sensors.

    Metabolism Chamber

    (ME-6936)

    This small plastic bottle is designed to allow simultaneous sensor measurements of oxygen gas and carbon dioxide gas.

    Materials Used:

    Dry pea seeds - 25
    Germinating pea seeds, boiled - 25
    Germinating pea seeds, chilled - 25
    Germinating pea seeds, room temperature - 25
    Glass beads - 25

    The Associated Bundle:

    College Biology Bundle

    (PS-2926B)

    A complete probeware bundle designed for PASCO's College Biology curriculum

    Interface Required

    This experiment may require software and an interface for data collection.