microbial world

4. planktonic marine protozoans that secrete elaborate and delicate skeletons made of glass (silica) and other materials
6. derives energy from chemical compounds, not light
8. a biologist who study microorganisms
9. Is able to obtain energy from organic matter by respiration
11. structurally simple but very diverse eukaryotic organisms
12. A very diverse group of simple, mostly aquatic and photosynthetic organisms
14. a resistant carbohydrate found in the skeleton of many animals, whereas it is made of cellulose in plants
17. have two flagella-one wrapped around the middle of the cell and one trailing free
19. incredibly important for producing O2
20. being formed in tropical seas

1. makes own organic compounds
2. smallest of true living organisms and oldest forms of life
3. the simplest primitive form of life
5. protected by an outer protein
7. Has 2 Domains - Bacteria and Archaea
10. protozoans with calcium carbonate shell
11. Can be a primary producer and consumer
13. Is a short chain of genetic material and is protected by outer capsid.
15. A complex carbohydrate characteristic of plants and other primary producers
16. Has different shapes and is found on almost every surface.
18. unicellular organisms that form in chain or star-like groups