Across
- 2. minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells
- 4. the study of living organisms
- 6. a complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotides linked in a long chain
- 8. a plastid that contains chlorophyll and in which photosynthesis takes place
- 9. the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy
- 12. a naturally occurring, extremely complex substance that consists of amino acid residues joined by peptide bonds
- 13. a molecule that can be bonded to other identical molecules to form a polymer
- 14. organic compounds that are fatty acids
- 17. Transport,does not require energy to move substances across cell membranes
- 18. dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing genetic material
- 19. a semipermeable membrane surrounding the cytoplasm of a cell
Down
- 1. process by which molecules of a solvent pass through a semipermeable membrane from a less concentrated solution into a more concentrated one
- 3. the smallest structural and functional unit of an organism
- 5. a space or vesicle within the cytoplasm of a cell
- 7. a region on an enzyme that binds to a protein or other substance during a reaction
- 10. any of a large group of organic compounds that includes sugars, starch, and cellulose, containing hydrogen and oxygen in the same ratio as water.
- 11. the process to create polymers
- 15. an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane
- 16. a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi and bacteria
- 20. a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction