Science Project Ideas

Remember that these project ideas and outlines are meant to help you complete your own science project. But it is DISHONEST and UNETHICAL to copy someone else's project work samples and submit them as if they were your own. That's called plagiarism and it's a fast way to get a failing grade. It's okay to do the same project as someone else, or review what others have done so you can make your project better, but DO NOT COPY and pretend it's your project. Someone is sure to spot the plagiarism!!  


  1. Research, construct and demonstrate the usage of a simplified microscope to view micro-organism


  2. Is there a difference between plant and animal DNA?

  3. What is the most effective procedure for extracting onion cell DNA?

  4. How can we extract DNA from yeast?

  5. How is DNA precipitation accomplished?

    Detecting Microorganisms

  6. Is it possible to make and use a nutrient agar from materials at home?

  7. How sanitary is an open bowl of candy?

  8. What types of bacteria are present in the air and what is the best temperature for their growth? (Advanced project)

  9. Compare the amounts of bacteria in different poultry samples.

  10. Are fast food restaurant cooked meats free of bacteria?

  11. Compare the amounts of bacteria in refrigerated vs. frozen samples of ground beef. (Advanced level project)

  12. Compare the types of microorganisms in various nearby water supplies.

  13. Are nearby water sources such as streams and lakes contaminated with E coli?

  14. What are the effects of over the counter preparations such as  Robitussin, Advil and vitamin C on E coli?

  15. Which is more common in the dust on top of kitchen cabinets... bacteria or molds and fungi?

  16. How sanitary are the wash cloths, sponges, and sinks of the average home?

  17. Which area has the most bacteria... my classroom, my home, or the emergency room of the local hospital?

  18. Compare the relative bacterial levels in milk samples with different expiration  dates.

  19. What effects do magnetic or electric fields have on bacteria?

  20. What effect does pH have on bacterial growth?

  21. What are the effects of temperature and glucose on bacterial growth?

  22. What is the effect of temperature on bacteria in milk?

  23. What effect does garlic have on bacterial growth?

  24. What effect does ultraviolet light have on bacteria?

  25. What effect does microwave radiation have on bacteria?

  26. Are some types of makeup more prone to bacterial growth?

  27. What levels of bacteria are present in school drinking fountains?

  28. What are the effects of different lighting and salinity conditions on  Euglena cells?


  29. Which brand of mouthwash is the best control for oral bacteria?

  30. Do deodorants and anti-perspirants mask odor, kill bacteria, or both?

  31. Which household cleaner kills bacteria the best?

  32. Do soaps get rid of skin bacteria?  Do germicidal soaps work, and if so, which one works best? 

  33. What is the effectiveness of triclosan and ethyl alcohol in killing hand bacteria?

  34. Are antibacterial hand gels effective against E coli?

  35. Does diluting an antibacterial hand gel affect its ability to kill bacteria?

  36. Are common sanitary procedures such as handwashing and alcohol swabbing really effective in preventing the spread of bacteria?

  37. Which common antiseptic is most effective against bacteria?

  38. Which antimicrobal contact lens solution is the most effective?

  39. Compare the effectiveness of regular soap, germicidal soap, rubbing alcohol  and hydrogen peroxide in destroying bacteria on your hands.

  40. Compare the effectiveness of assorted tile cleaners in killing shower mold.

  41. Can naturally occurring substances be used as disinfectants or antibacterials?

  42. Can a microwave oven be used as a sterilization device?


  43. Which type of bread molds the most rapidly?  

  44. What factors are beneficial to the growth of bread molds? Detrimental?

  45. What is the effect of light and temperature on bread mold?

  46. Which type of cheese molds the most rapidly?  

  47. What is the effect of microwave radiation on bread molds?Will mold(s) grow on mascara? 

  48. Can penicillium mold be grown at home and penicillin extracted?

  49. What are the optimum conditions for fermentation of yeast?

  50. What effect does ultraviolet light have on the fermentation rate of yeast?

  51. What effect does the sun's ultraviolet rays have on the growth of yeast?

  52. Is sunscreen effective in preventing UV light damage to yeast growth?

  53. Which would be the best growth medium for baker's yeast?  Corn syrup, sugar, or starch?

    Soil Bacteria

  54. Which nearby region has the best soil?

  55. What  would the effect be on plant growth if the soil had no micro-organisms?

  56. Will soil bacteria assist in degrading phenol?

  57. What factors affect the rate at which food scraps decompose when buried in soil?

  58. Can useful household microbial products be found in soil samples in our city?


  59. Can antibiotic substances be isolated from soil samples in our city?

  60. Which antibiotic is most effective against microorganisms?

  61. Are herbal antibiotics as effective as mainstream antibiotics?

  62. How rapidly does bacteria mutate after treatment with antibiotics?


  63. What affect does temperature have on fermentation?

  64. Does the acidity of apple juice affect how quickly it ferments?

  65. What are the results of fermenting grape juice with yeast?

  66. What percentage of alcohol is produced by fermentation?

  67. Can the bacteria in yogurt be used to ferment the sugars in milk and create additional yogurt?

  68. Can the limberger cheese bacterium be collected, isolated and grown from the cheese itself?

  69. What are the effects of temperature and pH on yeast?


  70. Can radiation be used to control bacterial growth on meat products meant for human consumption?

  71. What happens to water quality when the level of dissolved oxygen is varied?

  72. What are the effects of various growth medias on dinoflagellates' ability to produce bioluminescence? 

  73. What type of organisms are found in rotting wood?

  74. What is their relationship to the wood?  Are there different organisms in different types of wood?

  75. Can the transformation efficiency in E. Coli be increased?

  76. Which has the greatest percentage of lipids; the yolk or white of an egg?

  77. How does osmosis affect cells?

  78. How effective is blood at buffering?

  79. What is the role of salivary enzymes in digesting starch?

  80. What are the effects of enzymes on the digestive process?

  81. Are some types of fats and oils digested easier than others?

  82. At what temperature is protein digestion by pepsin enzymes most effective?

  83. What is the optimum pH for milk protein to be digested?

  84. How does temperature and pH affect fat cell structure?

For further information on these ideas see