Across
- 2. substance that causes an allergic reaction
- 3. Theory theory that proposes eukaryotic cells evolved through a symbiotic relationship between ancient prokaryotes
- 5. substance prepared from dead or weakened pathogens, or mRNA, then introduced into a body to produce immunity
- 7. structures structures that are the same but have different functions in different species. EX: whale's fin and the human arm
- 9. any inherited structure, behavior, or internal process that enables an organism to respond to their environment and produce offspring
- 14. a very small particle, containing DNA or RNA surrounded by a protein. It attaches to living cells, hijacking their organelles to make more viruses, often causing illness.
- 15. vector disease-carrying organism, such as a rat, mosquito, or fly that spreads infectious diseases
- 18. process in which a liquid is heated to a temperature that kills most bacteria
- 21. disease disease caused by a virus, bacterium, fungus, or protist that is spread from an infected organism or the environment to another organism
- 22. structures extra structure/body part that is NOT needed by the organism EX: human appendix
- 23. immunity long lasting immunity that results when the body makes its own antibodies in response to a specific antigen
Down
- 1. selection natural selection that favors average individuals in a population. EX: Average size spiders more likely to survive than larger or smaller spiders. Large-->easily eaten by predators. Small-->cannot find food or compete for food with larger spiders
- 2. a protein made in response to a specific antigen that can attach to the antigen and cause it to be useless
- 4. selection occurs when natural selection favors ONE extreme variation in a trait EX: woodpeckers eating insects deep inside a tree, only woodpeckers with extremely Long beaks will be able to access food source
- 6. disease disease such as cancer, diabetes, or asthma, that is not spread from one person to another
- 8. selection theory that was proposed by Charles Darwin as an explanation for how change happens in a population over time
- 10. immunity immunity that results when antibodies produced in one animal are introduced into another's body; does not last as long as active immunity
- 11. selection individuals with either extreme of a trait are favored over average individuals
- 12. a protein ID tag on the outside of cells, often causing the production of antibodies
- 13. Evolution a pattern of evolution in which species that were once similar to an ancestral species become increasingly distinct
- 16. evolution 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
- 17. overly strong reaction of the immune system to a foreign substance
- 18. soup theory theory that suggests life began in a pond or ocean as a result of the combination of chemicals from the atmosphere and some form of energy (lightning) to make amino acids (the building blocks of proteins)
- 19. structures structures that have a different structural make up but have the same function. EX: bird's wing and butterfly's wing
- 20. transmitted disease (STD) infectious disease such as chlamydia, AIDS, or genital herpes , that is passed from one person to another during sexual contact