6.3: ATP Powers Cellular Work

6.3: ATP Powers Cellular Work by Coupling Exergonic Reactions to Endergonic Reactions

Key Terms: Endergonic Reaction, Exergonic Reaction, Energy Coupling, Phosphorylated Intermediate

BELLWORK: Watch and take your own notes on the ATP Adenosine Triphosphate Bozeman Video

IN CLASS READING of Concept 6.3: Pages 128-130 in your text.

1. List 3 main types of work a cell does, including an example for each.

2. State the special energy molecule responsible for most energy coupling in cells.

3. State the type of chemical reaction that can break the bonds between the phosphate groups of ATP.

4. Draw a picture that shows ATP undergoing hydrolysis.

5. Write the chemical equation for the hydrolysis of ATP. Include 𝚫G!

6. Explain why ATP is useful to the cell.

7. Create an analogy for the energy contained in the triphosphate tail of ATP.

8. Summarize how energy coupling using ATP hydrolysis can help a cell synthesize glutamine from glutamic acid and ammonia (a normally endergonic reaction). 

9. Explain the key to coupling exergonic reactions and endergonic reactions.

10. Explain how ATP drives transport work across the cell membrane. Is this passive or active transport?

11. Explain how ATP drives mechanical work in the cell.

12. Summarize how ATP is a renewable resource for the cell.

13. Predict how much ATP humans would use up in a day if it did not get recycled.
14. Write the chemical equation for the formation of ATP from ADP and phosphate.

15. Explain why ATP formation is not spontaneous.

16. Explain what provides the energy for ATP formation for most all organisms.