CELLS

4. another term for archaebacteria.microorganisms that are similar to bacteria in size and simplicity of structure but radically different in molecular organization.
5. the central and most important part of an object, movement, or group, forming the basis for its activity and growth
8. any of a number of organized or specialized structures within a living cell.
9. 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.
10. the arrangement of and relations between the parts or elements of something complex.
11. an activity or purpose natural to or intended for a person or thing.
14. having or consisting of many cells.

1. any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products
2. A self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
3. a member of a large group of unicellular microorganisms that have cell walls but lack organelles and an organized nucleus, including some that can cause disease.
6. of protozoans, certain algae and spores, etc.) consisting of a single cell.
7. a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles.
12. the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.
13. system a Biological system (or Organ system) is a group of organs that work together to perform a certain task.