cell theory

Edit Answers
1234567891011121314151617181920212223
Across
  1. 2. Wall: A rigid outer layer made of cellulose that provides structural strength, support, and protection to the cell.
  2. 4. The complex of DNA and proteins (histones) that makes up chromosomes within the nucleus.
  3. 5. A cylindrical structure found in animal cells, which helps organize microtubules and is involved in cell division.
  4. 6. The jelly-like fluid portion of the cytoplasm in which organelles are suspended.
  5. 10. A specialized subunit within a cell that has a specific function, analogous to an organ in a body.
  6. 11. (Cilia, plural): Small, hair-like projections on the surface of some cells that beat rhythmically to move the cell or move fluid/materials past the cell.
  7. 14. Membrane: Another term for the cell membrane.
  8. 16. A vesicle that collects cytoplasmic material and organelles for degradation.
  9. 17. Often called the "control center" or "brain" of the cell, it houses the cell's DNA in the form of chromatin and chromosomes.
  10. 20. The microtubule-organizing center in animal cells, containing the centrioles.
  11. 22. (Flagella, plural): A longer, whip-like appendage used for cell locomotion.
  12. 23. The genetic material that contains the instructions for cell growth, reproduction, and all cellular activities.
Down
  1. 1. Generate energy for the cell.
  2. 3. An organism whose cells have a nucleus and other organelles enclosed by membranes (plants, animals, fungi, protists).
  3. 4. A threadlike structure of nucleic acids and protein found in the nucleus, carrying genetic information in the form of genes.
  4. 7. apparatus: Modifies, sorts, and packages proteins and lipids.
  5. 8. Store water, nutrients, and waste.
  6. 9. Envelope: The double membrane that encloses the nucleus.
  7. 12. Break down waste materials and cellular debris.
  8. 13. A single-celled organism (like bacteria) that lacks a membrane-bound nucleus and other membrane-bound organelles.
  9. 15. Bundled filaments found in muscle cells that facilitate muscular contraction.
  10. 18. Synthesize proteins.
  11. 19. An organelle that contains enzymes which break down various substances, including metabolic hydrogen peroxide and fatty acids.
  12. 21. Reticulum: Involved in the synthesis of proteins and lipids.