Biology Facts

We’ve created this list of 225 amazing fun facts about Biology for your enjoyment and for you to share with friends! Includes over 175 fun facts about Biology and 50 cool facts about Biology for kids.

Table of Contents

• Biology Facts 1-25
• Biology Facts 25-50
• Biology Facts 51-75
• Biology Facts 76-100
• Biology Facts 101-125
• Biology Facts 126-150
• Biology Facts 151-175
• Biology Facts for Kids 1-25
• Biology Facts for Kids 26-51

Biology Facts 1-25

Here are 25 fun facts about Biology:

1. The human body has more than 650 muscles.
2. The brain uses about 20% of the body’s oxygen and calories.
3. The largest cell in the human body is the female egg cell.
4. The smallest cell in the human body is the male sperm cell.
5. The human body contains more than 100 trillion cells.
6. The shortest bone in the human body is the stapes bone in the ear.
7. The longest bone in the human body is the femur.
8. The human nose can detect over 1 trillion different scents.
9. The liver is the largest internal organ in the human body.
10. The human heart beats about 100,000 times per day.
11. The human body contains enough fat to make seven bars of soap.
12. The human body contains enough carbon to make 9,000 pencils.
13. The human body contains enough iron to make a nail.
14. The human body contains enough sulfur to kill all fleas on a dog.
15. The human body contains enough potassium to fire a toy cannon.
16. The human body contains enough phosphorus to make 2,200 match heads.
17. The human body contains enough water to fill a 50-liter barrel.
18. The human brain is made up of about 75% water.
19. The human brain weighs about 3 pounds (1.4 kilograms).
20. The human brain has about 100 billion neurons.
21. The human brain can hold about 1 petabyte of information.
22. The human brain uses about 20% of the body’s energy.
23. The human brain can process information at a speed of up to 120 meters per second.
24. The human eye can distinguish about 10 million different colors.
25. The human eye can see objects as small as 0.1 millimeters.

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Biology Fun Facts 26-50

Here are another 25 fun facts about Biology:

26. The human eye can detect light in a range of wavelengths from about 400 to 700 nanometers.
27. The human ear can detect sounds with frequencies between about 20 and 20,000 hertz.
28. The human tongue can detect five basic tastes: sweet, sour, salty, bitter, and umami.
29. The human nose can detect pheromones, which are chemical signals that can affect behavior.
30. The human skin can detect temperature, pressure, and pain.
31. The human skin is the largest organ in the body.
32. The human body produces about 25 million new cells every second.
33. The human body replaces its entire outer layer of skin about once a month.
34. The human body produces about 1 liter of saliva per day.
35. The human body produces about 500 milliliters of urine per day.
36. The human body produces about 1 liter of sweat per day.
37. The human body produces about 2,000 red blood cells every second.
38. The human body produces about 100 billion white blood cells every day.
39. The human body produces about 1 billion sperm cells every day.
40. The human body produces about 500 eggs during a woman’s lifetime.
41. The human body contains about 0.2 milligrams of gold.
42. The human body contains about 16 milligrams of copper.
43. The human body contains about 1.5 grams of calcium.
44. The human body contains about 25 grams of magnesium.
45. The human body contains about 5 grams of iron.
46. The human body contains about 4 grams of zinc.
47. The human body contains about 0.1 grams of iodine.
48. The human body contains about 0.2 grams of selenium.
49. The human body contains about 1.5 kilograms of bacteria.
50. The human body contains about 0.2 milligrams of gold.

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Biology Fun Facts 51-75

Here are another 25 fun facts about Biology:

51. The human body contains about 16 milligrams of copper.
52. The human body contains about 1.5 grams of calcium.
53. The human body contains about 25 grams of magnesium.
54. The human body contains about 5 grams of iron.
55. The human body contains about 4 grams of zinc.
56. The human body contains about 0.1 grams of iodine.
57. The human body contains about 0.2 grams of selenium.
58. The human body contains about 1.5 kilograms of bacteria.
59. A person’s blood vessels, if stretched end-to-end, would be about 60,000 miles long.
60. A sneeze can travel up to 100 miles per hour.
61. A person’s heart can beat up to 200 times per minute during extreme exercise.
62. The human body can produce up to 500 different types of enzymes.
63. The human body contains about 70% water.
64. The human body contains about 30% fat.
65. The human body contains about 25% protein.
66. The human body contains about 1% minerals.
67. The human body contains about 1% carbohydrates.
68. The human body contains about 1% vitamins.
69. The human body contains about 0.1% trace elements.
70. The human body contains about 0.01% hormones.
71. The human body contains about 0.01% neurotransmitters.
72. The human body contains about 0.0001% neuropeptides.
73. The human body contains about 100,000 miles of blood vessels.
74. The human body produces about 1.5 liters of mucus per day.
75. The human body produces about 7 liters of stomach acid per day.

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Biology Facts 76-100

Here are another 25 fun facts about Biology:

76. The human body produces about 1 liter of bile per day.
77. The human body produces about 500 milliliters of pancreatic juice per day.
78. The human body produces about 1.5 liters of saliva per day.
79. The human body produces about 1 liter of tears per year.
80. The human body can produce up to 15 liters of sweat per day.
81. The human body contains about 2 to 5 million sweat glands.
82. The human body can produce up to 2 liters of urine per day.
83. The human body contains about 1,000 lymph nodes.
84. The human body contains about 600 muscles.
85. The human body contains about 206 bones.
86. The human body contains about 650 skeletal muscles.
87. The human body contains about 7,000 nerves in each foot.
88. The human body contains about 100,000 hairs on the scalp.
89. The human body contains about 20,000 genes.
90. The human body contains about 3 billion base pairs of DNA.
91. The human body contains about 100 trillion bacteria.
92. The human body contains about 10 times more bacteria than human cells.
93. The human body contains about 10 times more viruses than bacteria.
94. The human body contains about 5 million red blood cells per cubic millimeter of blood.
95. The human body contains about 8,000 white blood cells per cubic millimeter of blood.
96. The human body contains about 250,000 platelets per cubic millimeter of blood.
97. The human brain contains about 100 billion neurons.
98. The human brain weighs about 3 pounds.
99. The human brain can hold about 2.5 petabytes of information.
100. The human body contains about 650 different types of skeletal muscles.

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Biology Facts 101-125

Here are another 25 fun facts about Biology:

101. The human heart beats about 100,000 times per day.
102. The human nose can detect about 1 trillion different scents.
103. The human eye can distinguish between about 10 million different colors.
104. The human ear can hear sounds as low as 20 Hz and as high as 20,000 Hz.
105. The human tongue can taste five primary flavors: sweet, sour, salty, bitter, and umami.
106. The human body contains about 5 million taste buds.
107. The human body can survive without food for about 40 days.
108. The human body can survive without water for about 3 to 5 days.
109. The human body can survive without oxygen for about 4 to 5 minutes.
110. The human body can heal broken bones within 6 to 12 weeks.
111. The human body can heal a cut or wound within 1 to 2 weeks.
112. The human body can replace about 1% of its cells every day.
113. The human body can produce about 2 to 3 million new red blood cells every second.
114. The human body can produce about 1,000 new skin cells every minute.
115. The human body can produce about 100 billion new white blood cells every day.
116. The human body can produce about 100 billion new platelets every day.
117. The human body can produce about 2 billion new sperm cells every day.
118. The human body can produce about 1 million new egg cells during a woman’s lifetime.
119. The human body can regulate its internal temperature within a range of 97 to 99 degrees Fahrenheit.
120. The human body can generate up to 30,000 heat units per hour during exercise.
121. The human body can generate up to 1,000,000 heat units per hour during extreme exercise.
122. The human body can consume up to 10,000 calories per day during extreme exercise.
123. The human body can survive exposure to temperatures as low as -40 degrees Fahrenheit and as high as 120 degrees Fahrenheit.
124. The human body can survive exposure to pressure up to 500 times the atmospheric pressure at sea level.
125. The human body can survive exposure to radiation up to 50,000 times the dose that is lethal to humans.

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Biology Facts 126-150

Here are another 25 fun facts about Biology:

126. The human body can regenerate some organs, such as the liver and skin, but not others, such as the heart and brain.
127. The human body can produce about 300 different types of hormones.
128. The human body can produce about 100 different types of neurotransmitters.
129. The human body can produce about 20 different types of neuropeptides.
130. The human body can produce about 300 different types of cytokines.
131. The human body can produce about 5 different types of growth factors.
132. The human body can produce about 20 different types of interleukins.
133. The human body can produce about 40 different types of chemokines.
134. The human body can produce about 15 different types of interferons.
135. The human body can produce about 20 different types of prostaglandins.
136. The human body can produce about 100 different types of leukotrienes.
137. The human body can produce about 100 different types of eicosanoids.
138. The human body contains about 100 trillion cells.
139. The smallest cell in the human body is the sperm cell, and the largest is the egg cell.
140. The human body contains about 206 bones.
141. The smallest bone in the human body is the stapes bone in the ear, and the largest is the femur bone in the leg.
142. The human body contains about 600 muscles.
143. The longest muscle in the human body is the sartorius muscle in the thigh, which can measure up to 2 feet in length.
144. The strongest muscle in the human body is the masseter muscle in the jaw.
145. The fastest muscle in the human body is the orbicularis oculi muscle in the eye.
146. The human body contains about 60,000 miles of blood vessels.
147. The largest organ in the human body is the skin.
148. The smallest organ in the human body is the pineal gland.
149. The human body contains about 22 feet of small intestine and about 5 feet of large intestine.
150. The human body contains about 1.2 to 1.5 gallons of blood.

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Biology Facts 151-175

Here are another 25 fun facts about Biology:

151. The human body contains about 4 to 5 liters of lymph.
152. The human body contains about 10 to 13 pints of interstitial fluid.
153. The human body contains about 2.5 to 3.5 quarts of cerebrospinal fluid.
154. The human body contains about 6 to 7 quarts of digestive juices.
155. The human body contains about 2 to 3 quarts of urine.
156. The human body contains about 1 to 2 pints of sweat per day.
157. The human body contains about 100 trillion bacteria, which outnumber human cells by a factor of 10 to 1.
158. The human body contains about 100,000 to 200,000 different species of bacteria.
159. The human body contains about 10 times more bacterial cells than human cells.
160. The human body contains about 10 times more viral particles than bacterial cells.
161. The human body contains about 1,000 different types of viruses.
162. The human body contains about 400 different types of fungi.
163. The human body contains about 20,000 different types of proteins.
164. The human body contains about 30,000 different types of enzymes.
165. The human body contains about 50,000 different types of lipids.
166. The human body contains about 3,000 different types of carbohydrates.
167. The human body contains about 100 different types of minerals.
168. The human body contains about 13 different types of vitamins.
169. The human body contains about 8 different types of essential amino acids.
170. The human body contains about 2 different types of essential fatty acids.
171. The human body contains about 8 different types of essential sugars.
172. The human body contains about 8 different types of essential minerals.
173. The human body contains about 20 different types of essential vitamins.
174. The human body contains about 30 different types of essential trace elements.
175. The human body contains about 10 different types of essential antioxidants.
176. The human body contains about 10 different types of essential phytochemicals.
177. The human body contains about 100 different types of essential micronutrients.
178. The human body contains about 1 to 2 gallons of water.
179. The human body requires about 8 glasses of water per day to maintain hydration.

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Biology Facts For Kids 1-25

Here are another 25 fun facts about Biology:

1. The largest living thing on Earth is a fungus called Armillaria ostoyae, which covers 2,200 acres in Oregon.
2. The smallest fish in the world is the Paedocypris fish, which is only 7.9mm long.
3. The longest living animal is the ocean quahog clam, which can live up to 500 years.
4. The longest living mammal is the bowhead whale, which can live up to 200 years.
5. The smallest mammal is the bumblebee bat, which weighs less than a penny.
6. The fastest land animal is the cheetah, which can run up to 75 mph.
7. The fastest bird is the peregrine falcon, which can dive at speeds of over 200 mph.
8. The loudest animal on Earth is the blue whale, whose calls can reach up to 188 decibels.
9. The most venomous animal in the world is the box jellyfish.
10. The smallest bird in the world is the bee hummingbird, which is only 2.24 inches long.
11. The tallest animal in the world is the giraffe, which can grow up to 18 feet tall.
12. The heaviest animal in the world is the blue whale, which can weigh over 200 tons.
13. The smallest primate in the world is the pygmy mouse lemur, which weighs only 1 ounce.
14. The strongest animal in the world is the dung beetle, which can lift 1,141 times its own weight.
15. The smartest animal in the world is the chimpanzee, which has an IQ of 70-80.
16. The only mammal that can fly is the bat.
17. The only birds that can fly backwards are hummingbirds.
18. The only reptiles that can change their skin color are chameleons.
19. The only mammals that lay eggs are monotremes, such as the platypus and echidna.
20. The largest bird in the world is the ostrich, which can weigh up to 320 pounds.
21. The smallest reptile in the world is the dwarf gecko, which is only 16mm long.
22. The longest snake in the world is the reticulated python, which can grow up to 33 feet long.
23. The only marsupial found outside of Australia is the opossum, found in North and South America.
24. The only venomous primate in the world is the slow loris.
25. The only animal that can regrow its limbs is the axolotl.

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Biology Facts For Kids 26-50

Here are another 25 fun facts about Biology:

26. The only animal that can survive in space without a spacesuit is the tardigrade, also known as the water bear.
27. The largest living reptile is the saltwater crocodile, which can grow up to 23 feet long.
28. The fastest marine animal is the sailfish, which can swim up to 68 mph.
29. The most deadly animal in Africa is the mosquito, which spreads diseases such as malaria and yellow fever.
30. The most venomous spider in the world is the funnel-web spider.
31. The most venomous snake in the world is the inland taipan.
32. The most venomous scorpion in the world is the deathstalker scorpion.
33. The most venomous fish in the world is the stonefish.
34. The most venomous snail in the world is the cone snail.
35. The most venomous jellyfish in the world is the box jellyfish.
36. The most venomous jellyfish in the world is the box jellyfish.
37. The longest insect in the world is the Chan’s megastick, which can grow up to 22 inches long.
38. The fastest insect in the world is the Australian tiger beetle, which can run up to 5.6 mph.
39. The strongest insect in the world is the rhinoceros beetle, which can lift up to 850 times its own weight.
40. The longest living insect is the queen termite, which can live up to 50 years.
41. The largest insect in the world is the goliath beetle, which can grow up to 4.3 inches long and weigh up to 3.5 ounces.
42. The smallest mammal in the world is the bumblebee bat, which weighs only 0.07 ounces.
43. The smallest reptile in the world is the dwarf gecko, which is only 0.6 inches long.
44. The fastest fish in the world is the sailfish, which can swim up to 68 mph.
45. The largest fish in the world is the whale shark, which can grow up to 40 feet long.
46. The most poisonous plant in the world is the castor oil plant.
47. The tallest tree in the world is the redwood tree, which can grow up to 379 feet tall.
48. The largest flower in the world is the Rafflesia arnoldii, which can grow up to 3 feet in diameter and weigh up to 24 pounds.
49. The oldest living tree in the world is a Great Basin bristlecone pine called Methuselah, which is over 4,800 years old.
50. The most studied animal in the world is the fruit fly, which has been used for over a century to study genetics and development.

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