Biology Exam Review

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Across
  1. 2. an inherited trait that increases an organism’s chances of survival
  2. 8. organisms that are best adapted to an environment survive and reproduce more than others (two words)
  3. 9. reads along each naked single strand adding the complementary nucleotide (two words)
  4. 10. a single imaginary plane divides the body into left and right sides (two words)
  5. 11. embryos of all vertebrates are very similar early on
  6. 13. blood circulates entirely within blood vessels that extend through the body (three words)
  7. 15. negative feedback, a system of which the product or result of a process limits the process itself (two words)
  8. 19. chordates with a backbone
  9. 22. process of change over time
  10. 23. a record of the history of life on earth
Down
  1. 1. all living organisms are related to one another (two words)
  2. 3. RNA contains A, C, G, U, these are like the letters of a language (two words)
  3. 4. the RNA holds the code for making proteins which are long chains of amino acids
  4. 5. any number of imaginary planes drawn through the center of the body could divide the body into equal halves (two words)
  5. 6. process in which food is broken down outside cells in a digestive system them it's absorbed (two words)
  6. 7. heritable changes in genetic information
  7. 12. untwists the double helix and exposes complementary strands
  8. 14. assembled in segments created for many primers (two words)
  9. 16. nucleic acid that consists of a long chain of nucleotides
  10. 17. who is the father of evolution? (two words)
  11. 18. bubble like structures that provide an enormous amount if surface area
  12. 20. after proteins are built transfer RNA molecules transfer each amino acid to the ribosomes
  13. 21. chemical or agent in the environment that cause mutation
  14. 22. the process in which animals remove ammonia through waste