Across
- 5. electron transport _____ (ETC) A series of proteins in the inner mitochondrial membrane that transfer electrons and help make ATP.
- 7. A molecule that carries high-energy electrons from earlier stages of cellular respiration to the electron transport chain.
- 10. ________ energy – The energy input required to get a chemical reaction started.
- 11. _____ cycle, A series of chemical reactions in the mitochondria that break down pyruvate to produce carbon dioxide, NADH, and ATP.
- 12. A chemical reaction that absorbs energy
- 13. A chemical reaction that releases energy.
- 15. A process that makes ATP without oxygen by breaking down glucose after glycolysis.
- 17. The main energy-carrying molecule of the cell; it stores and releases energy for cellular processes.
- 19. The green pigment in plants that captures light energy for photosynthesis.
- 23. ______ cycle – The set of chemical reactions in the stroma that use carbon dioxide and energy (from ATP and NADPH) to make glucose.
- 24. The set of chemical reactions that build larger molecules from smaller ones and require energy.
- 26. A substance that speeds up a chemical reaction without being used up in the process; enzymes are biological catalysts.
- 27. A flattened membrane sac inside chloroplasts where the light-dependent reactions of photosynthesis occur.
- 28. cellular _______, The process by which cells break down glucose to store its chemical potential energy in ATP.
Down
- 1. The process by which plants, algae, and some bacteria use sunlight to make glucose from carbon dioxide and water.
- 2. A three-carbon molecule formed at the end of glycolysis; it is used in the next stages of cellular respiration.
- 3. The molecule that an enzyme acts on in a chemical reaction.
- 4. ATP ______ – An enzyme in the inner mitochondrial membrane that uses the flow of hydrogen ions to make ATP.
- 6. The enzyme that captures carbon dioxide in the first step of the Calvin cycle.
- 8. The fluid-filled space around the thylakoids inside a chloroplast; where the Calvin cycle happens.
- 9. Chemical ______ energy – The stored energy in the bonds of molecules that can be released during a chemical reaction.
- 14. The set of chemical reactions that break down large molecules into smaller ones and release energy.
- 16. oxidative ______ – The final stage of cellular respiration where most ATP is made, using energy from electrons carried by NADH transferred along the electron transport chain.
- 18. The molecule or molecules made at the end of a chemical reaction.
- 20. The first step of cellular respiration in which six-carbon glucose is broken down into two three-carbon pyruvates, producing ATP and NADH.
- 21. A protein that catalyzes a chemical reaction.
- 22. The inner space of the mitochondrion where the Krebs cycle takes place.
- 24. Requiring oxygen to occur; for example, aerobic respiration needs oxygen.
- 25. A particle or packet of light energy that powers the light-dependent reactions of photosynthesis.