¨Cells¨

3. an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus.
5. an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane.
6. an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
9. any of a number of organized or specialized structures within a living cell.
10. the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.
11. a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material.
12. the material or protoplasm within a living cell, excluding the nucleus.
13. (in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place.

1. a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles. Prokaryotes include the bacteria and cyanobacteria.
2. a minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells.
4. a slender threadlike structure, especially a microscopic appendage that enables many protozoa, bacteria, spermatozoa, etc. to swim.
7. the semipermeable membrane surrounding the cytoplasm of a cell.
8. a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport.
10. a short microscopic hairlike vibrating structure found 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.
12. a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria.