Biology Vocab

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Across
  1. 5. specialized structure that performs important cellular functions within a eukaryotic cell
  2. 8. process of noticing and describing events or processes in a careful, orderly way
  3. 10. compound that produces hydroxide ions in a solution; solution with a pH of less than 7
  4. 13. a preference or point of view that is personal, not scientific
  5. 17. in cells, structure that contains a cell's genetic material in the form of DNA
  6. 20. basic unit of all forms of life
  7. 21. subunit of which nucleic acids are composed; made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
  8. 23. cell organelle that stores materials like water, salts, proteins, and carbohydrates
  9. 24. a logical interpretation based on prior knowledge and experience
  10. 26. substance formed by the chemical combination of two or more elements in definite proportions
  11. 31. organism whose cells contain a nucleus
  12. 34. one of several forms of a single element, which contains the same number of protons but different numbers of neutrons
  13. 38. elements or compounds that enter into a chemical reaction
  14. 39. cell organelle that breaks down lipids, carbohydrates, and proteins into small molecules that can be used by the rest of the cell
  15. 40. compound made up of carbon, hydrogen, and oxygen atoms; type of nutrient that is the major source of energy for the body
  16. 42. material composed of two or more elements or compounds that are physically mixed together but not chemically combined
  17. 44. mixture of water and an undissolved material
  18. 45. substance that is dissolved in a solution
  19. 46. reactant of an enzyme-catalyzed reaction
  20. 48. in cells, structure that contains the cell's genetic material in the form of DNA
  21. 49. unicellular organism that lacks a nucleus
  22. 50. macromolecule that is needed by the body for growth and repair
Down
  1. 1. possible explanation for a set of observations or possible answer to a scientific question
  2. 2. evidence; information gathered from observations
  3. 3. smallest unit of most compounds that displays all the properties of that compound
  4. 4. combination of chemical reactions through which an organism builds up or breaks down materials
  5. 6. cell organelle consisting of RNA and protein found throughout the cytoplasm in the cell
  6. 7. small chemical unit that makes up a polymer
  7. 9. pure substance that consists entirely of one type of atom
  8. 11. dissolving substance in a solution
  9. 12. well-tested explanation that unifies a broad range of observations and hypotheses
  10. 14. atom that has a positive or negative charge
  11. 15. compound that prevents sharp, sudden changes in pH
  12. 16. macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes
  13. 18. organelle that is found in the cells of plants and some other organisms that captures energy from sunlight and converts it into chemical energy
  14. 19. signal to which an organism responds
  15. 22. protein catalyst that speeds up the rate of specific biological reactions
  16. 25. genetic material that organisms inherit from their parents
  17. 26. attraction between molecules of the same substance
  18. 27. molecules composed of many monomers; makes up macromolecules
  19. 28. fluid portion of the cell outside the nucleus
  20. 29. force of attraction between different kinds of molecules
  21. 30. to change over time
  22. 32. compound that forms hydrogen ions in a solution; a solution with a pH of less than 7
  23. 33. relatively constant internal physical and chemical conditions that organisms maintain
  24. 35. elements or compounds produced by a chemical reaction
  25. 36. substance that speeds up the rate of a chemical reaction
  26. 37. type of mixture in which all the components are evenly distributed
  27. 41. scientific study of life
  28. 43. the basic unit of matter
  29. 47. negatively charged particle; located in the space surrounding the nucleus