Across
- 4. The amount of organic matter comprising a group of organisms in the habitat
- 7. submicroscopic, hairlike structures that are made of protein
- 12. The viral DNA inserts into a chromosome in a host cell
- 14. the division of a cell into two genetically identical cells
- 17. Simple model that shows how matter and energy move through an ecosystem
- 18. The relationship where one organism benefits from the interaction and the other is harmed
- 19. Circular chromosomes in an area of the cell
- 20. A form of reproduction that some prokaryotes exhibit
Down
- 1. Several interacting populations that inhabit a common environment and are interdependent
- 2. Evaporation, transpiration, condensation, precipitation, percolation
- 3. It is what is formed from the layer of polysaccarides around the cell wall
- 5. Shows all possible feeding relationships in a community at each trophy level
- 6. Life supporting portions of earth composed of air, land, fresh water and salt water
- 8. A group of organisms of the same species that live in the same area at the same time
- 9. A nonliving strand of genetic material within a protein coat.
- 10. Natures way of reusing carbon atoms
- 11. The host cell makes many copies of the viral RNA or DNA
- 13. The outer layer of all viruses and is made of proteins
- 15. A structure that bacteria produces
- 16. An organism that supports a parasite