Biology

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Across
  1. 3. smallest unit of life
  2. 5. biological agents that elicit an immune response to a specific antigen derived from an infectious disease-causing pathogen
  3. 8. self-regulating process by which biological systems tend to maintain stability while adjusting to conditions that are optimal for survival.
  4. 9. designed to target bacterial infections within the body
  5. 11. The presence of two identical alleles at a particular gene locus
  6. 12. simple cells that do not have a true nucleus or other cell organelles.
  7. 15. carrier of genetic information.
  8. 16. an organic compound made up of small molecules called amino acids
  9. 17. specific characteristic of an organism
  10. 18. adenine (A), guanine (G), thymine (T), and cytosine (C).
  11. 20. ribonucleic acid
  12. 22. any individual entity that embodies the properties of life
  13. 23. type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells
  14. 26. having or consisting of many cells.
  15. 28. refers to the observable physical properties of an organism
  16. 29. type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes
Down
  1. 1. microscopic, single-celled organisms that thrive in diverse environments
  2. 2. Some cells in multicellular organisms are modified to carry out a particular function
  3. 4. proteins that act as biological catalysts
  4. 6. the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA)
  5. 7. Cell division gives rise to genetically identical cells in which the total number of chromosomes is maintained.
  6. 10. microbe that can cause damage in a host
  7. 11. regulate physiology and behavior
  8. 13. specific characteristic of an organism
  9. 14. detectable change in the physical or chemical structure of an organism's internal or external environment.
  10. 19. the process of creating proteins from an mRNA template.
  11. 21. consist of strands of DNA wrapped in a double helix around a core of proteins
  12. 24. induce cell growth, division and death; control membrane channels or regulate cell binding
  13. 25. response within a system
  14. 27. infectious agent that replicates only inside the living cells of an organism.