Across
- 2. organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner layer being folded inward to form layers (cristae)
- 4. system-a group of organs that work together to perform a certain task. Common systems
- 5. activity or purpose natural to or intended for a person or thing
- 6. a member of a large group of unicellular microorganisms that have cell walls but lack organelles and an organized nucleus, including some that can cause disease.
- 7. reticulum-a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis.
- 10. characterized by the formation or presence of a single cell or cells.
- 11. part or aspect of something abstract, esp. one that is essential or characteristic
- 13. a feature or quality belonging typically to a person, place, or thing and serving to identify it
- 16. makes up a living object
- 17. central and most important part of an object
- 18. plastid that contains chlorophyll and in which photosynthesis takes place.
- 19. set of connected things or parts forming a complex whole, in particular a set of things working together as parts of a mechanism or an interconnecting network
- 21. material or protoplasm within a living cell, excluding the nucleus.
- 22. space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.
- 23. optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times
Down
- 1. structure or arrangement of something
- 2. or consisting of many cells.
- 3. microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles
- 4. of a number of organized or specialized structures within a living cell.
- 8. minute particle consisting of RNA and associated proteins, found in large numbers in the cytoplasm of living cells.
- 9. slender threadlike structure, esp. a microscopic whiplike appendage that enables many protozoa, bacteria, spermatozoa, etc., to swim.
- 12. of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products
- 14. tendency toward a relatively stable equilibrium between interdependent elements, esp. as maintained by physiological processes.
- 15. short, microscopic, hairlike vibrating structure. Cilia occur in large numbers on the surface of certain cells, either causing currents in the surrounding fluid, or, in some protozoans and other small organisms, providing propulsion.
- 20. - a netlike structure of animal cells structure
- 21. wall- outside the membrane od the cells of