Cellular Biology

2. The process of converting light energy into chemical energy to make food.
4. Simple, single-celled organism that lacks a membrane-bound nucleus.
7. Complex cell that contains a nucleus and other membrane-bound organelles.
9. Small vesicles that break down toxic substances and produce hydrogen peroxide.
11. The thin coat of lipids that forms the boundary between a cell and its environment.
13. A network of protein fibers that helps maintain cell shape and secure organelles.
16. Apparatus that modifies, sorts, and packages proteins like a "post office."
17. Type of cellular respiration that occurs in the absence of oxygen.
18. The site of photosynthesis in plants and algae.
20. The genetic material that contains instructions for building proteins.
21. Small organelles found in the cytoplasm where proteins are synthesized.
22. The command center of a eukaryotic cell that houses the cell's DNA.
23. Organelle that functions as the cell's digestive component or "garbage disposal."

1. The green pigment in plants that absorbs light energy for photosynthesis.
3. The "powerhouse" of the cell where ATP is produced during cellular respiration.
5. An anaerobic process used to produce energy when oxygen is low, often by yeast.
6. The primary energy-carrying molecule used by cells to do work.
8. A rigid outer layer providing support in plants, fungi, and most bacteria.
10. The inner fluid-filled area of the mitochondria where the Krebs cycle occurs.
12. A darkly staining area within the nucleus where ribosomal subunits are assembled.
14. A membrane-bound sac used for storage, often very large in plant cells.
15. The jelly-like substance inside the plasma membrane that fills the cell.
16. The first stage of cellular respiration where a glucose molecule is split.
19. Type of cellular respiration that requires the presence of oxygen.