Mississippi Science FB.3.5
The Standard
- FB.3
- Students will demonstrate an understanding of how the structure of living organisms supports the essential functions of life.
Use models to explain how ADP and ATP cycle to store and release chemical energy using inorganic phosphate.
2026 Mississippi College- and Career-Readiness Standards for Science · Organization and Energy in Living Systems
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students use a model to show how cells add inorganic phosphate to ADP to make ATP. They show how ATP becomes ADP and phosphate again, releasing energy the cell can use.
What Mastery Looks Like
- A student can label ADP, ATP, and phosphate in both directions of the cycle. They can show where energy is needed to make ATP and where energy is released when ATP breaks down.
Common Misconceptions
- Students may think phosphate turns into energy or that breaking a bond by itself releases energy. They may also think cells throw ADP away after using ATP.
How to Assess It
- On an exit ticket, ask students to draw ADP becoming ATP and ATP becoming ADP. Have them label phosphate, energy added, and energy released.
Lesson moves
Ways to Teach It
Give pairs an ADP card and a loose phosphate card; have them attach and remove the phosphate, then add energy arrows.
Ask students to write two sentences explaining why a cell keeps ADP after ATP releases energy.
Give groups ATP, ADP, phosphate, and energy cards; have them race to arrange both directions of the cycle correctly.
Show a snack nutrition label and ask students how food energy could help rebuild ATP after muscle cells use it.
Keep exploring
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Use models to demonstrate that ATP and ADP are cycled within a cell as a means to transfer energy.
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