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Chapter 4: Photosynthesis and Cellular Respiration

Difficulty Level: At Grade Created by: CK-12
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Photosynthesis and Cellular Respiration


Lesson 4.1: Energy for Life

4.1.1 Why Living Things Need Energy

4.1.2 How Organisms Get Energy: Autotrophs and Heterotrophs

  • Autotrophs
  • Heterotrophs

4.1.3 Energy Molecules: Glucose and ATP

  • Glucose
  • ATP
  • Why Organisms Need Both Glucose and ATP

4.1.4 Making and Using Food

  • Photosynthesis
  • Cellular Respiration

Lesson 4.2: Photosynthesis: Sugar as Food

4.2.1 Stages of Photosynthesis

4.2.2 The Chloroplast: Theater for Photosynthesis

4.2.3 Photosynthesis Stage I: The Light Reactions

  • Steps of the Light Reactions
  • Summary of Stage I

4.2.4 Photosynthesis Stage II: The Calvin Cycle

  • Steps of the Calvin Cycle
  • Summary of Stage II

4.2.5 Chemosynthesis

Powering the Cell: Cellular Respiration

4.3.1 Stages of Cellular Respiration

4.3.2 Cellular Respiration Stage I: Glycolysis

  • Splitting Glucose
  • Results of Glycolysis

4.3.3 Anaerobic and Aerobic Respiration

4.3.4 Structure of the Mitochondrion: Key to Aerobic Respiration

4.3.5 Cellular Respiration Stage II: The Krebs Cycle

  • Steps of the Krebs Cycle
  • Results of the Krebs Cycle

4.3.6 Cellular Respiration Stage III: Electron Transport

  • Transporting Electrons
  • Making ATP

4.3.7 How Much ATP?

Lesson 4.4: Anaerobic Respiration

4.4.1 Fermentation

  • Lactic Acid Fermentation
  • Alcoholic Fermentation

4.4.2 Aerobic vs. Anaerobic Respiration: A Comparison

  • Advantages of Aerobic Respiration
  • Advantages of Anaerobic Respiration

Pacing the Lesson

Use the Class Periods per Lesson table below as a guide for the time required to teach the lessons of this chapter.

Lesson Number of Class Periods
4.1 Energy for Life 1.0
4.2 Photosynthesis: Sugar as Food 2.0
4.3 Powering the Cell: Cellular Respiration 2.0
4.4 Anaerobic Respiration 1.0
  • Class periods are assumed to be 60 minutes long.

Online Resources

See the following Web sites for appropriate laboratory activities:

1. In this inquiry lab, students investigate how photosynthesis and cellular respiration affect gas levels in a closed ecosystem.

2. In this investigation, students use chromatography to separate plant pigments.

3. In this lab, students test factors that affect the rate of anaerobic respiration in yeast.

These Web sites may also be helpful:

4. Students can find interactive animations of photosynthesis at this Web site.

5. This Web site has animations of the Calvin Cycle. It keeps a running tally of ATP and NADPH.

Chapter Outline

Chapter Summary

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