Unit 3 Vocab

1. network of protein filaments in a eukaryotic cell that gives the cell its shape and internal organization and is involved in movement
6. groups of organs and tissues that work together
7. cells can develop in different ways to have different features to help them carry out a special task to help the organism function
8. pressure that must be applied to stop water from diffusing across a selectively permeable membrane
9. fluid portion of the cell outside the nucleus
10. when the concentration of two solutions is the same
14. tiny sacs that transport material within or outside the cell.
16. a process through which bulk amounts of specific molecules can be imported into a cell after binding to cell surface receptors.
17. the process by which cells move materials from within the cell into the extracellular fluid.
20. strong, supporting layer around the cell membrane in some cells
23. when comparing two solutions, the solution with the greater concentration of solutes
24. a microscope with high magnification that uses electron beams in place of light
27. process by which solids are ingested by living cells; it is another type of endocytosis
29. unicellular organism that lacks a nucleus
30. thin, flexible barrier that surrounds all cells; regulates what enters and leaves the cell

2. the process by which cells move materials out of the cell
3. microscope that uses multiple lenses and light to enlarge the image of a sample
4. process of diffusion in which molecules pass across the membrane through cell membrane channels
5. diffusion of water through a selectively permeable membrane
11. cell organelle that breaks down lipids, carbohydrates, and proteins into small molecules that can used by the rest of the cell
12. cell organelle that stores materials such as water, salts, proteins, and carbohydrates
13. cellular transport where substances move against a concentration gradient. (requires energy)
15. groups of cells that work together (same job)
17. organism whose cells contain a nucleus
18. a process by which liquid droplets are ingested by living cells; it is one type of endocytosis
19. a microscopic hair-like tail used by cells and microorganisms for movement (usually only 1 or 2)
21. property of biological membranes that allows some substances to pass across it while others cannot; also called semi permeable membrane
22. when comparing two solutions, the solution with the lesser concentration of solutes
25. group of tissues that work together
26. process by which particles tend to move from an area where they are more concentrated to an area where they are less concentrated
28. microscopic, hair-like projections on the surfaces of some cells and of certain organisms