Life Science: Citric Acid Review Activity

 Author: Kip Conwell

DisciplineLife Sciences 

 Grade Level: 9-12

 Created in 2004


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The Citric Acid Cycle Review Activity is a multimedia approach for teaching an appreciation of cyclical events in cellular respiration. It takes advantage of written and audio instruction and guidance to direct students in a hands on round of the Citric Acid Cycle. By completing this activity, students will learn about the cyclical nature of the making ATP, and they will develop curiosities about some of the interesting but more complex biochemical transformations that occur within the Citric Acid Cycle. This activity ends with a take home writing assignment to synthesize the students appreciation
of the Citric Acid Cycle.


Students will be able to appreciate the details of steps within the Kreb’s Cycle. Students will be able to understand the steps of the Kreb’s Cycle at functional level through physical practice of “modeled mechanisms” of Kreb’s Cycle steps. Students will express curiosities surrounding the generation of cellular energy, through a written assignment.

Keywords: Kreb Cycle, Nutrition, Food, Cellular Respiration, Citric Acid Cycle.


National Standard:

Life Science Content Standard C - Structure and function of Liiving Systems. 

Arizona State Standards:

Strand 4: Life Sciences
Concept 1. The cell
PO 1 - Describe the role of energy in cellular growth, development, and repair.
PO 4 - Analyze the mechanisms of transport of materials into and out of cells.

Concept 5: Matter, Energy, and Organization in living systems
PO 1. Compare the processes of photosynthesis and cellular respiration.
PO 2. Describe the role of organic and inorganic chemical such as ATP

Strand 5: Physical Science
Concept 4. Chemical Reactions
PO 2. Identify the indicators of chemical change, including formation of a precipitate,
evolution of a gas, color change, absorption or loss of heat energy.
PO 6. Solve problems using quantities


 Introduction (pdf / doc)
 Cycle Review Sheet (pdf / doc)
 Cycle Format Sheet (pic)
 Games Sheet (pic)
 Audio Files (html)

 References and Related Links: