Biology Crossword Puzzle

2. the smallest structural and functional unit of an organism
5. the regions of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms
7. a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
8. relating to or derived from living matter.
11. a chemical substance that neutralizes alkalis
12. a particle smaller than an atom
14. any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose.
15. a molecule that can be bonded to other identical molecules to form a polymer.
17. the basic unit of a chemical element
18. able to dissolve other substances.

1. not consisting of or deriving from living matter
3. a biological community of interacting organisms and their physical environment.
4. all the inhabitants of a particular town, area, or country
6. a substance that has a molecular structure consisting chiefly or entirely of a large number of similar units bonded together
7. an individual animal, plant, or single-celled life form.
9. a group of organisms living in the same place or having a particular characteristic in common.
10. any of the class of soluble, crystalline, typically sweet-tasting carbohydrates found in living tissues
13. the sticking together of particles of the same substance
16. a substance capable of reacting with an acid to form a salt and water
19. any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products.