Question 1
Multiple choiceEasy1 markEqual amounts of GP were added to four reaction mixtures. ATP and reduced NADP were added as indicated; all other conditions and the time interval were identical. The amount of TP formed after 1 min was measured.
| Mixture | ATP added | Reduced NADP added | TP formed / μmol |
|---|---|---|---|
| 1 | Yes | No | 0.0 |
| 2 | No | Yes | 0.0 |
| 3 | Yes | Yes | 2.4 |
| 4 | No | No | 0.0 |
Which combination was present in the mixture that formed TP?
Show answer and explanation
Answer: C. Only mixture 3 formed TP, and it contained both ATP and reduced NADP. This matches the conversion of GP into TP, which uses ATP and reduced NADP.
A: assumes ATP alone is sufficient; mixture 1 formed no TP. B: assumes reduced NADP alone is sufficient; mixture 2 formed no TP. D: selects the mixture without either compound, which formed no TP.
Remember: GP conversion to TP requires both ATP and reduced NADP.