Unit B Crossword Gabriela Delgado

4. - substance created by the body to carry out chemical digestion.
7. - structures in cells that perform a certain function.
12. - all the life processes that take place in a cell.
14. - usually unicellular organisms that can be seen only through a microscope.
16. System - group of organs that work together to perform a certain task, such as breathing.
17. - living things.
20. cells - cells that have specific structures that help them to perform particular functions.
21. - any change in an organism's environment.
22. - made of just one cell.
24. - organism's reaction to a stimulus.
25. - type of connective tissue found in the bones that produce red blood cells.
26. generation - false idea that living things could come from nonliving matter.
28. Digestion - breakdown of large food particles into smaller particles by enzymes
29. - the movement of particles of a substance from an area of higher concentration to an area of lower concentration.
30. Blood Cells - any kind of cells normally found circulating blood.

1. - type of microscope organisms.
2. - group of similar cells working together to perform a specific function.
3. - tiny blood vessels that connect arteries to veins.
5. - hair-like extensions that protrude from the surface of some unicellular organisms and from some cells in multicellular organisms.
6. - made of more than one cell.
8. Light Microscope - microscope that has two or more lenses and has a light source.
9. - diffusions of water through a selectively permeable membrane.
10. - wave-like muscle contains along the digestive system.
11. - optical device used for viewing very small objects.
13. - work together.
15. Permeable - describes a membrane with very small openings that allow particles of some substance.
18. - parts of an organism that perform specific tasks.
19. Digestion - physical breakdown of food into small portions.
23. - purpose or task.
27. - foot-like projections on an amoeba, used for movement and capturing food.