Across
- 1. Membrane - the semipermeable membrane surrounding the cytoplasm of a cell.
- 5. Envelope - nuclear membrane, also known as the nuclear envelope is the double lipid bilayer membrane which surrounds the genetic material and nucleolus in eukaryotic cells.
- 10. Diffusion - a process of passive transport, with this passive transport aided by integral membrane proteins.
- 11. - a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles
- 15. - the material of which the chromosomes of organisms other than bacteria (i.e., eukaryotes) are composed.
- 17. - the spreading of something more widely.
- 18. - the relative amount of a given substance contained within a solution or in a particular volume of space; the amount of solute per unit volume of solution.
- 19. - any of a number of organized or specialized structures within a living cell.
- 23. Reticulum - a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane.
- 24. - a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.
- 25. - an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
- 28. - the material or protoplasm within a living cell, excluding the nucleus.
- 29. Permeability - a membrane that will allow certain molecules or ions to pass through it by diffusion and occasionally specialized "facilitated diffusion".
- 32. Apparatus - a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport.
Down
- 2. - a process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane.
- 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.
- 4. - a microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence.
- 6. - present in numbers in the cytoplasm of cells, sometimes aggregating to form more complex structures.
- 7. Bilayer - a thin polar membrane made of two layers of lipid molecules. These membranes are flat sheets that form a continuous barrier around cells.
- 8. - the ingestion of bacteria or other material by phagocytes and ameboid protozoans.
- 9. - the central and most important part of an object, movement, or group, forming the basis for its activity and growth.
- 12. - a minute particle consisting of RNA and associated proteins, found in large numbers in the cytoplasm of living cells.
- 13. - a small rodlike structure, about 4–7 nanometers in diameter, present in numbers in the cytoplasm of many eukaryotic cells.
- 14. - he taking in of matter by a living cell by invagination of its membrane to form a vacuole.
- 16. Transport - the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
- 18. -(in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place.
- 20. - a small dense spherical structure in the nucleus of a cell during interphase.
- 21. - any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products.
- 22. Transport - transport of a substance across a cell membrane by diffusion; expenditure of energy is not required.
- 26. - a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
- 27. System - a group of organs that work together to perform a certain task.
- 30. - an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane.
- 31. - a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.