Vernier Software & Technology

# Cell Respiration (CO2)

## Introduction

Cell respiration refers to the process of converting the chemical energy of organic molecules into a form immediately usable by organisms. Glucose may be oxidized completely if sufficient oxygen is available by the following equation:

${{\text{C}}_{\text{6}}}{{\text{H}}_{{\text{12}}}}{{\text{O}}_{\text{6}}}{\text{ + 6 }}{{\text{O}}_{\text{2}}}{\text{(g)}} \to {\text{6 }}{{\text{H}}_{\text{2}}}{\text{O + 6 C}}{{\text{O}}_{\text{2}}}{\text{(g) + energy}}$

All organisms, including plants and animals, oxidize glucose for energy. Often, this energy is used to convert ADP and phosphate into ATP. It is known that peas undergo cell respiration during germination.

## Objectives

In the Preliminary Activity, you will gain experience using a CO2 Gas Sensor as you determine the rate of respiration for germinating peas.

After completing the Preliminary Activity, you will first use reference sources to find out more about germination and cell respiration before you choose and investigate a researchable question.

## Sensors and Equipment

This investigation features the following Vernier sensors and equipment.

### Option 2

You may also need an interface and software for data collection. What do I need for data collection?

## Investigating Environmental Science through Inquiry

See other experiments from the lab book.

 1 Seasons and Angle of Insolation 2 A Local Weather Study 3 Investigating Dissolved Oxygen 4 Water Quality 5 Long Term Water Monitoring 6 Water Treatment 7 Investigating Salinity 8 Soil Temperature 9 Soil Salinity 10 Soil pH 11 Soil Moisture 12 Soil and Acid Rain 13 Managing Garden Soil Moisture 14 Cell Respiration (CO2) 15 Biodiversity in Ecosystems 16 Biochemical Oxygen Demand 17 Water Cycle Column Investigations 18 Decomposition Column Investigations 19 Ecocolumn Investigations 20 Global Warming 21 UV Investigations 22 Comparing Sunscreens 23 Primary Productivity 24 Modeling Population Growth 25 Insulation Study 26 Fossil Fuels 27 Energy Conversion 28 Wind Power 29 Photovoltaic Cells 30 Investigation of Passive Solar Heating 31 The Effect of Acid Deposition on Aquatic Ecosystems 32 Measuring Particulates 33 Investigating Indoor Carbon Dioxide Concentrations 34 A Pollution Study

### Investigation 14 from Investigating Environmental Science through Inquiry Lab Book

#### Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.