Chapter 18-20 Crossword

2. The electron carrier produced during the conversion of succinate to fumarate.
5. The first molecule formed in the citric acid cycle.
6. The enzyme that catalyzes the first step of the citric acid cycle by combining acetyl-CoA and oxaloacetate.
7. The product formed from isocitrate by isocitrate dehydrogenase.
9. A gas released during the decarboxylation steps of the citric acid cycle.
11. The product formed from succinate by succinate dehydrogenase.
13. A cofactor that combines with acetyl to form acetyl-CoA.
14. The enzyme that converts isocitrate into alpha-ketoglutarate, producing NADH.
16. The electron carrier produced during the oxidation of isocitrate, alpha-ketoglutarate, and malate.
18. A high-energy intermediate formed from alpha-ketoglutarate in the citric acid cycle.
19. The enzyme that converts citrate to isocitrate via cis-aconitate in the citric acid cycle.
20. The enzyme complex that converts pyruvate to acetyl-CoA before entering the citric acid cycle.

1. ATP generation in the citric acid cycle at the succinyl-CoA synthetase step.
3. The enzyme that converts alpha-ketoglutarate to succinyl-CoA, producing NADH.
4. A four-carbon molecule formed by the conversion of succinyl-CoA.
8. The product formed from fumarate by fumarase.
10. The product formed by the action of aconitase on citrate.
12. The molecule regenerated at the end of the citric acid cycle to combine with acetyl-CoA.
15. The enzyme responsible for synthesizing ATP in oxidative phosphorylation.
17. The enzyme that catalyzes the hydration of fumarate to malate.