1. What is the most frequent illness?
  2. Why do humans consider killing other people or animals (cows, pigs) as bad?
  3. Why are some products that are made by humans (such as some chemicals), acts by humans (chopping trees) considered as 'bad for the nature'?

  4. What is the structural/chemical difference leading to different shapes in facial/head/pubic hair?
  5. Goose bumps and body control

  6. Why do we have more male infants born?
  7. Does bone structure/shape play a role in men and women differences in strength/resistance?

  8. Why does an increased heart rate mean increased blood pressure?
  9. Swelling that persists at 7 weeks after surgery to repair broken elbow

  10. Why does scraped knee hurt more in hot water than cold water.

  11. Do men and women have the same number of genes?
  12. Are there biological reasons why life expectancy is lower for men in most countries of the world?
  13. Why ears turns red when it's cold?
  14. How does proximal centriole of human sperm function?
  15. Is it theoretically possible to treat filaggrin deficiency with a dietary supplement?
  16. Biology of sad songs

  17. Ipsilateral vs contralateral side of body
  18. How many species of mites live on the human body?
  19. Neurons during Numb feeling
  20. How do tear glands secrete tears?
  21. Is there any biological basis for the emphasis on the value of the firstborn son?
  22. What do you see when your eyes are closed?

  23. What is it called when one human eye is seeing brighter color than the other?
  24. Do human somatic cells have 46 chromosomes all the time?
  25. Ascending loop of Henle

  26. Function of Smooth Muscles in the skin

  27. How would our circadian rhythm change over time if we had no sunlight whatsoever?

  28. Why is the skin of European bog bodies brown?

  29. Is there a difference between sleeping late and waking up late vs sleeping early and waking up early?
  30. At what point does muscle mass overcome muscle strength to affect speed?

  31. Warm water bath

  32. Does a generator potential pass along a nerve the same way an action potential does?
  33. Is scratching in humans vestigal?

  34. Can one eye affect the other eye's low-light adaption?
  35. What is the function of the polar bodies produced during oogenesis?

  36. Are there nerve endings on or inside the corpus cavernosum/spongiosum?

  37. How is lactase produced in the body?

  38. Do human women smell different before they enter labour?
  39. Why do humans transport glucose but not sucrose like plants?
  40. Why do floaters in the human eye appear to have a squiggly-line, tubular shape?
  41. Why do the humans become sleepy after meals?

  42. Human Demography - Where can I find this statistic?
  43. Is it possible to be attracted to your own pheromones?

  44. Can the mating of a couple with Rhesus positive and negative blood types result in miscarriage?

  45. Pregnancy from two parents with incompatible blood types, can it lead to complications?

  46. Why aren't human babies considered larvae?

  47. Are humans the only animal that requires "clean water"?

  48. Why does it hurt when water touches cuts?

  49. Oxygen mask to patients
  50. Why do we drink clean water

  51. what if there is a door for which our immune system has no key?
  52. Are there nerves in the corpus cavernosum/spongiosum?

  53. Why babies cry after they are born?
  54. Will neurons die if they are inactive for a long time?
  55. Getting goosebumps at will

  56. Facial uniqueness of some animals of the same species
  57. Validity of Acoustic Weapon Effects on Biological Organisms?

  58. Bending your little finger without bending ring finger

  59. Is it possible to have sleep paralysis while sleepwalking?

  60. Digestion of creatine polymer?

  61. What is the easiest way to measure a human body surface area?
  62. What causes the human body to “jump” when we get a shock?

  63. Is nicotine toxic to humans?
  64. Difference between intervertebral and vertebral foramina
  65. Do the corpus cavernosum/spongiosum have nerves?

  66. Alpha-gamma co-activation

  67. Barr bodies in males?

  68. When is a person declared to be dead?
  69. Why in ulnar claw hand interphalengial joints are flexed?
  70. How does temperature affect sex drive in humans?

  71. Can you confirm the function of adipose tissue in the skin

  72. Does the leaves of papaya plant help in increasing platelets in a case of dengue?

  73. Why do we need to close eyes to sleep?

  74. Length of sleep time

  75. Why do we sleep?

  76. Is tunneling of a proton in our DNA a cause of mutations?
  77. Full name for stem cells
  78. What senses are active while sleeping?

  79. What causes us to see white light?
  80. Why do we get bored of certain food items after repeatedly eating them?

  81. Why do you get an increase in bicarbonate ions after vomiting?
  82. Consequence of touching Formaldehyde
  83. Do skin mites reproduce on human face during night?
  84. How could humans have interbred with Neanderthals if we're a different species?

  85. About which cells in the human body do we know most?
  86. What does breathing through the mouth have to do with cracked lips?
  87. Why does the amount of adipose tissue contribute the most to the total body water amount in humans?

  88. Use of progesterone in preventing ovulation?
  89. Diffusion of hydrophobic molecules through the cell membrane

  90. What will happen if a foetus is Rh- and the mother is Rh+?
  91. what is the major difference between flux enzymes and rate-limiting enzymes?
  92. How much DNA (from human VS other organisms) is in human feces?
  93. Electric Shock To Human Body

  94. Why is motivation temporary?

  95. Would we improve our health if we removed all of our useless DNA?
  96. most different human tissues with respect to gene expression profiling
  97. Why Interracial couples always give birth to colored one?
  98. Evolutionary uselessness of the male nipple

  99. What is the difference between average sperm epimutations and intersection sperm epimutations, in the context of the attached article?

  100. Sexual reproduction in organisms with 1 parent