Across
- 3. The cytoplasmic network of protein filaments that plays an essential role in cell movement, shape, and division
- 4. A collection of tissues that carry out a specialized function of the body
- 6. A long, hairlike structure that grows out of a cell and enables the cell to move
- 8. A cell organelle that contains digestive enzymes
- 9. In biology, the smallest unit that can perform all life processes
- 11. A single-celled organism that does not have a nucleus or membrane-bound organelles
- 14. A group of similar cells that perform a common function
- 16. An organelle that is active during mitosis
- 18. The theory that states that all living things are made up of cells, that cells are the basic units of organisms, that each cell in a multicellular organism has a specific job, and that cells come only from existing cells
- 20. A double layer of phospholipids that makes up plasma and organelle membranes
- 21. The region of the cell within the membrane that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus
- 22. The part of the eukaryotic nucleus where ribosomal RNA is synthesized
- 25. A fiber found inside eukaryotic cells that is composed mainly of the protein actin and that has a role in cell structure and movement
- 27. A large cavity or sac that is found in plant cells or protozoans and that contains air or partially digested food
- 29. A system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids
- 30. An organelle found in plant and algae cells where photosynthesis occurs
- 32. One of the small, tubular fibers composed of the protein tubulin that are found in the cytoplasm of eukaryotic cells, that compose the cytoskeleton, and that play a role in cell structure and movement
Down
- 1. An organism made up of cells that have a nucleus enclosed by a membrane, multiple chromosomes, and a mitotic cycle
- 2. A cell organelle that helps make and package materials to be transported out of the cell
- 5. The double membrane that surrounds the nucleus of a eukaryotic cell
- 7. Or the cell membrane, the cell's outer boundary
- 10. An organelle of plant cells that contains specific substances and performs specific functions for the cell
- 12. A membrane system found within chloroplasts that contains the components for photosynthesis
- 13. An atom's central region, which is made up of protons and neutrons
- 15. rigid structure that surrounds the cell membrane and provides support to the cell
- 17. In eukaryotic cells, the cell organelle that is surrounded by two membranes and is the site of cellular respiration, which produces ATP
- 19. A cell organelle composed of RNA and protein; the site of protein synthesis
- 23. In a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell, the main ring of DNA
- 24. The soluble portion of the cytoplasm, which includes molecules and small particles, such as ribosomes, but not the organelles covered with membranes
- 26. One of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function
- 27. A green pigment that is present in most plant and algae cells and some bacteria, that gives plants their characteristic green color, and absorbs light to provide energy for photosynthesis
- 28. A hairlike structure arranged in tightly packed rows that projects from the surface of some cells
- 31. A group of organs that work together in the body to perform a complex function