Cells

3. smallest unit of life
6. the material or protoplasm within a living cell, excluding the nucleus.
8. a plastid that contains chlorophyll and in which photosynthesis takes place.
10. a minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells.
11. is a membrane-bound organelle that contains the cell's chromosomes.
12. are involved with various cell processes.
14. a slender threadlike structure, especially a microscopic appendage that enables many protozoa, bacteria, spermatozoa, etc. to swim.
15. specialized structures that perform various jobs inside cells.
16. a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport.
17. are small hair-like protuberances on the outside of eukaryotic cells.

1. a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles.
2. the semipermeable membrane surrounding the cytoplasm of a cell.
4. are organisms whose cells have a nucleus enclosed within a nuclear envelope
5. an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
7. a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane.
9. a membrane-bound cell organelle that contains digestive enzymes.
13. a structural layer surrounding some types of cells.