Across
- 2. Process that does not require oxygen
- 3. viral infected cells spill contents and release large amounts of organic matter that can be utilized by other organisms
- 4. break down dead organic matter
- 10. A kingdom made up of nongreen, eukaryotic organisms that have no means of movement, reproduce by using spores, and get food by breaking down substances in their surroundings and absorbing the nutrients
- 11. organisms that drift in water
- 13. Plantlike protists
- 14. A unicellular photosynthetic alga with a unique glassy cell wall containing silica
- 16. not capable of reproduction without host cell; contain DNA but cannot reproduce unless in a living cell
- 17. Cells that contain nuclei
- 19. Process that requires oxygen
- 20. spends only a portion of life as plankton
- 22. organism that uses energy from sunlight to convert carbon dioxide and water to carbon compounds
- 24. small free-floating animals that form part of plankton
- 25. Microscopic, free-floating, autotrophic organisms that function as producers in aquatic ecosystems
Down
- 1. amoeba like protist that has a shell and looks like a snail
- 5. A group of protozoans that move by waving tiny, hair-like organelles called cilia.
- 6. A red, orange, or brown coloration of water caused by a bloom.
- 7. use reverse transcriptase to copy their RNA genome into DNA
- 8. the first producers of energy-rich compounds that are later used by other organisms
- 9. A unicellular organism that lacks a nucleus and membrane bound organelles
- 11. "the earliest ones"; kingdom including unicellular and multicellular eukaryotes
- 12. whole life as plankton
- 15. reproduce by inserting their DNA into the DNA of the host cell
- 18. the production of light by means of a chemical reaction in an organism
- 21. Organisms that make their own food
- 23. An organism that cannot make its own food.