Across
- 5. substance prepared from dead or weakened pathogens, or mRNA, then introduced into a body to produce immunity
- 7. immunity that results when antibodies produced in one animal are introduced into another's body; does not last as long as active immunity
- 9. overly strong reaction of the immune system to a foreign substance
- 11. long lasting immunity that results when the body makes its own antibodies in response to a specific antigen
- 13. extra structure/body part that is NOT needed by the organism (like a human appendix)
- 15. theory that proposes eukaryotic cells evolved through a symbiotic relationship between ancient prokaryotes
- 18. disease-carrying organism that spreads infectious diseases (like a rat or mosquito)
- 22. disease caused by a virus, bacterium, fungus, or protist that is spread from an infected organism or the environment to another organism
- 23. a protein made in response to a specific antigen that can attach to the antigen and cause it to be useless
- 24. a pattern of evolution in which distantly related organisms evolve similar traits, occurs when unrelated species occupy similar environments, because they face similar environmental pressures they develop similar adaptations
- 25. disease such as cancer, diabetes, or asthma, that is not spread from one person to another
Down
- 1. theory that suggests life began in a body of water as a result of the combination of chemicals from the atmosphere and some form of energy to make amino acids
- 2. usually shortened to STD,this is an infectious disease that is passed from one person to another during sexual contact (AIDS and Chlamydia as examples)
- 3. a very small particle, containing DNA or RNA surrounded by a protein that attaches to living cells and taking control of their organelles to multiply. This causes illness
- 4. occurs when natural selection favors ONE extreme variation in a trait
- 6. substance that causes an allergic reaction
- 8. process in which a liquid is heated to a temperature that kills most bacteria
- 10. theory (by Charles Darwin) proposed as an explanation for how change happens in a population over time
- 12. individuals with either extreme of a trait are favored over average individuals
- 14. any inherited structure, behavior, or internal process that helps an organism respond to its environment and produce offspring
- 16. structures that are the same but have different functions in different species (like a whale's fin and the human arm)
- 17. natural selection that favors average individuals in a population
- 19. a protein ID tag on the outside of cells, often causing the production of antibodies
- 20. a pattern of evolution in which species that were once similar to an ancestral species become increasingly distinct
- 21. structures that have a different structural make up but have the same function (like a bird's wing and butterfly's wing)