Across
- 2. the outer visible portion of the ear that collects and directs sound waves toward the tympanic membrane
- 4. mechanical energy that is transmitted by longitudinal pressure waves in a medium (such as air or water)
- 5. a graphic representation of the relation of vibration frequency and the minimum sound intensity for hearing
- 10. an electronic device usually worn by a person for amplifying sound before it reaches the receptor organs
- 11. something which increases risk or susceptibility
- 13. a scientifically controlled study of the safety and effectiveness of a therapeutic agent (as a drug or vaccine) using consenting human subjects
- 14. the resistance of a group to an attack by a disease to which a large proportion of the members of the group are immune
- 15. the essential part of the vertebrae organ of hearing and equilibrium that includes the vestibule, the semicircular canals, and the cochlea
- 17. an artificial device to replace or augment a missing or impaired part of the body
- 18. a linking enzyme essential for DNA replication and recombinant DNA techniques
- 19. a tumor of high malignancy that starts in melanocytes of normal skin or moles and metastasizes rapidly and widely
- 20. binds to the ribosomes and blocks key interaction, which shuts off the protein chain; without this protein, the bacteria can no longer grow
Down
- 1. the genetic modification of a bacterium by incorporation of free DNA from another ruptured bacterial cell
- 3. a small ring of DNA that carries accessory genes separate from those of the bacterial chromosome
- 6. a display of the chromosome pairs of a cell arranged by size and shape
- 7. the genetic makeup of an organism
- 8. a harmless variant of a pathogen that stimulates a host's immune system to mount defense against the pathogen
- 9. the collection, classification, storage, and analysis of biochemical and biological information using computers especially as applied in molecular genetics and genomics
- 12. inhibit the use of metabolite antimetabolite, which is used for normal metabolism; this substrate is needed for folic acid biosynthesis
- 16. a gene having the potential to cause a normal cell to become cancerous