Cell Structure

4. a small dense spherical structure in the nucleus of a cell during interphase.
6. a minute cylindrical organelle near the nucleus in animal cells
7. wall a rigid layer of polysaccharides lying outside the plasma membrane
8. small, slender, hair-like structures present on the surface of all mammalian cells
9. membrane-bound organelles
11. a small organelle present in the cytoplasm of many cells
15. pores protein-lined channel in the nuclear envelope
16. ER part of a continuous membrane organelle in the cytoplasm of eukaryotic cells
18. a slender threadlike structure, especially a microscopic appendage that enables many protozoa, bacteria, spermatozoa, etc. to swim.
19. a long chain of protein subunit, as protein filament long chain of proteins, such as those found in hai
20. a cell organelle that helps process and package proteins and lipid molecules
21. a minute particle consisting of RNA
23. the material of which the chromosomes of organisms other than bacteria (i.e., eukaryotes) are composed. It consists of protein, RNA, and DNA
24. a plastid that contains chlorophyll and in which photosynthesis takes place

1. a substance formed during a middle step of a chemical reaction between reactants and the desired product
2. a membrane-bound organelle that contains the cell's chromosomes
3. a small fluid-filled bladder, sac, cyst, or vacuole within the body.
5. an organelle found in large numbers in most cells
6. membrane separates the interior of the cell from the outside environment
10. vacuole a large vacuole found inside of plant cells
12. A thin, helical, single-stranded filament of the cytoskeleton found in the cytoplasm of eukaryotic cells
13. apparatus a cell organelle that helps process and package proteins and lipid molecules
14. membrane the membrane found in all cells
17. a structure that helps cells maintain their shape and internal organization
22. Er an organelle found in both animal cells and plant cells