Biology Crossword

4. substances which react with acids
5. a group of organs that work together to perform one or more functions.
6. the basic unit of a chemical element.
7. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
9. a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
10. a particle smaller than an atom (e.g., a neutron) or a cluster of such particles (e.g., an alpha particle).
15. able to dissolve other substances.
17. relating to or denoting compounds which are not organic (broadly, compounds not containing carbon).
18. a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind.
19. an individual animal, plant, or single-celled life form.
20. The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.

1. all the inhabitants of a particular town, area, or country.
2. the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
3. a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.
8. a biological community of interacting organisms and their physical environment.
11. the action or process of adhering to a surface or object.
12. the sticking together of particles of the same substance.
13. a group of people living in the same place or having a particular characteristic in common.
14. (of food or farming methods) produced or involving production without the use of chemical fertilizers, pesticides, or other artificial agents.
16. A group of cells that have similar structure that function together as a unit.