Unit 2 bio

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Across
  1. 3. The main energy molecule in cells, providing energy for cellular processes.
  2. 5. All the water on Earth, including oceans, lakes, and rivers.
  3. 7. The solid parts of Earth, like rocks and soil.
  4. 8. Organelles where cellular respiration happens and energy is produced.
  5. 10. An important nutrient involved in energy transfer and genetic material.
  6. 11. respiration The process where cells break down glucose and oxygen to produce energy (ATP), carbon dioxide, and water.
  7. 12. reactions The part of photosynthesis that captures sunlight to make energy molecules ATP and NADPH.
  8. 15. The green pigment in plants that captures light energy for photosynthesis.
  9. 16. The organelle in plant cells where photosynthesis occurs.
  10. 17. Anaerobic breakdown of glucose that produces energy without oxygen, often producing lactic acid or alcohol.
  11. 18. A process that requires oxygen.
  12. 19. cycle A step in cellular respiration that produces energy carriers by breaking down pyruvate.
  13. 22. A low-energy molecule that can be converted to ATP by adding a phosphate group; involved in cellular energy transfer.
  14. 24. The layer of gases surrounding Earth.
Down
  1. 1. The first step in cellular respiration that breaks glucose into two molecules of pyruvate.
  2. 2. All living things on Earth and their environments.
  3. 3. A process that occurs without oxygen.
  4. 4. An organism that breaks down dead material and recycles nutrients.
  5. 5. An organism that obtains food by consuming other organisms.
  6. 6. reactions The part of photosynthesis that does not require light; uses energy from light reactions to make glucose.
  7. 9. An essential element for proteins and DNA; cycles through the environment.
  8. 13. The process where plants convert sunlight, carbon dioxide, and water into glucose and oxygen.
  9. 14. transport chain A sequence of proteins in mitochondria that helps produce ATP by transferring electrons.
  10. 16. A key element found in all organic molecules; cycles through living and nonliving parts of the environment.
  11. 18. An organism that makes its own food, usually through photosynthesis.
  12. 20. A substance that starts a chemical reaction and is changed by it.
  13. 21. Anything that has mass and occupies space.
  14. 23. The substance formed as a result of a chemical reaction.