Amazing facts in Biology

len Alfred Ajibola - Fri, 10th May, 2019 @ 20:02: PM

Topics in Biology

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Academic Questions in Biology

Please check out our Test Your Knowledge page to see all Questions and Answers

_____ cells are responsible for the formation of osteoblasts.

  • A. Osteocytes
  • B. Chondrocytes
  • C. Chondroblasts
  • D. Osteoclasts
  • E. Osteoprogenitor cells
  • F. Osteoblastic

_____ is a bone that constitute the axial skeleton.

  • A. Clavicle
  • B. Scapula
  • C. Patella
  • D. Radius
  • E. Sternum
  • F. Femur

Which of the following is false concerning cartilages and bones?

  • A. Cartilage does not have a direct blood supply while bones have direct blood supply
  • B. The process of ossification replaces a cartilage to bone
  • C. The protein that makes up cartilage is called chondrin while that that makes up bone is called ossein
  • D. Cartilage grows from both ends while bones grow from one of its epiphysis
  • E. They both have living cells within them
  • F. Haversian system is absent in cartilage but present in bones

A diagram showing the movement of energy through a food chain is called a _____.

  • A. Food Chain
  • B. Food Web
  • C. Food Energy
  • D. Food Link
  • E. Food Flow
  • F. Food Pyramid

Which of the following is NOT a part of the wrist bones (or carpal bones)?

  • A. Cuboid
  • B. Scaphoid
  • C. Hamate
  • D. Triquetral
  • E. Pisiform
  • F. Trapezium

The statements below are true concerning arteries except _____.

  • A. The arterial wall has 4 layers

  • B. Tunica Adventitia is the outermost layer of an artery

  • C. Aorta is the largest artery in the human body

  • D. Pulmunary artery conveys deoxygenated blood

  • E. Internal bleeding will occur when a deeply located artery is broken

  • F. Arterial vascular disorders are worsened in people with diabetes and renal failure

The following statements are true concerning blood vessels except _____.

  • A. They are comprised of arteries, veins and capillaries

  • B. Problems associated with blood vessels are called vascular disorders

  • C. All veins carry blood towards the heart

  • D. Capillaries are found at cellular level

  • E. Arteries usually divide to form arterioles

  • F. Arterioles give rise to capillaries

Food Pyramid - Len Academy

The above diagram shows a _____.

  • A. Food Chain

  • B. Food Web

  • C. Food Flow

  • D. Food Energy

  • E. Food Pyramid

  • F. Food Hierarchy



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Fun Facts in Biology:

Biology is a fun subject for everyone. It has numerous amazing facts that comes along with it.

In this article, we will look at some amazing facts concerning life.

Below are some of the amazing facts in biology:

All insects have six legs.

Cockroach is the fastest animal on six legs.

Insects are the only animals without a backbone and can still fly.

Every other animal that flies apart from insect must have a backbone.

You have more bones when you were a baby (300 bones) compared to the number of bones you've got now now (206 bones).

Please read on All Bones of the Human Body here.

The smallest cell in humans is the male sex cell (called sperm) while the largest cell is the female sex cell (called ovum).

Please read on the Male Reproductive System here.

Dolphins and whales live in water, yet they don’t drink water.

Your thigh bone (called the femur) is stronger than a concrete.

The femur carries the weight of your body when you walk.

The human bone marrow produces about 260 billion Red Blood Cells and 135 billion White Blood Cells daily.

Please read on the Red Blood Cells and Hemoglobin here.

Your red blood cell dies every four months.

The hydra is an animal that never grows old. Some scientists believe it can live forever.

The size of your heart is equal to the size of your fist.

The hard white part of your teeth (called the enamel) is not a living tissue.

Razor blades can be dissolved by the acid in your stomach. (This acid is concentrated Hydrochloric Acid or HCl)

Dolphins sleep with one eye open and the other closed.

The male gives birth in the seahorses.

The male honey bee (drones) exists for only one reason. “To impregnate the queen”. It dies immediately after a sexual intercourse with the queen.

The bacteria in your body is far more in number than the entire human beings living in the universe

Starfish is an aquatic animal with no head and no brain.

Children see better, hear better and smell better than adults.

Blocking the nostril to prevent sneezing can result in the eyes poping out of its sockets.

The human diaphragm separates the thorax from the abdomen and is very crucial for breathing.

The human liver performs over 500 different functions.

The nose and ear never stop growing. The eyes remain the same from birth to death.

If the acid in your stomach is poured over the skin, the skin will be severely damaged. If poured on iron, the iron will be dissolved by it.

You can’t sneeze with your eyes open.

Hugging releases the hormone oxytocin which can make people trust you even more.

Men listen with only the left side of their brains while women listen with both sides.

Please read on the Uniqueness of Man here.

Cleaning your ears regularly is actually dangerous to your health. It’s better to leave the ear wax inside of it.

Your body is composed more of liquid than solid.

Please read on Homeostasis, Internal Environment and Total Body Water here.

The human brain is folded in appearance. The smoother it is, the less intelligent a person becomes.

Please read on Intelligence Quotient and the Brain here.

The hardest substance in your body is not your bone. It’s actually enamel; the white part of your teeth.

An ant can lift an object 50 times its own weight.

80% of the brain is water.

When a child is born, they have no kneecaps. The kneecaps begin to appear at age 2 – 6.

The average human heart pumps on average about 4,000 gallons of blood daily.

The caterpillar (larva of a butterfly) has more muscles than human beings.

In times of danger, your pupil dilates so you can see more clearly.

Think of pupils as the hole in your eyes through which light enters.

Your nose and thumb are of the same length.

During immunization, germs are actually introduced into the baby’s body.

Please read more on Immunization to understand its process.

Cold weather improves the brain's retention ability.

A dark skin will wrinkle less when compared to a white skin.

The opening in the mouth terminates with the anus and is about 30 feet long.

Your brain works more when you are asleep.

The left part of the heart is more powerful than the right side.

A baby in the womb reacts to a loud music by kicking the mother.

You cannot be physically balanced without your inner ears.

The saliva you will produce in your lifetime can fill up two swimming pools.

Some of your internal organs including your brain cannot feel pain.

If apes and koalas committed a crime, they can be tracked and caught because they have a unique finger print just like humans.

Babies start dreaming from in the womb.

Blondes have more hair.

Newly born cries without tears between the first 6 weeks.

The thigh bone (femur) is the longest bone in the human body and accounts for one quarter of our height.

Some scientists say the brain can hold up to 1000 terabytes of data.

The human brain which is just 2% of our body mass takes up the most oxygen inside the body (about 20% of oxygen).

The smallest frog has the size of a fly. It’s called the little grass frog.

The main purpose of the eyebrows is to prevent sweat from getting into the eyes (and not necessarily for beautification).

At the age of 18, the human brain stops growing.

The smallest bone in your body is called the stapes. It is found in the middle ear.

The fastest moving part of the human body is the eye.

The total length of human blood vessels would circle the earth two and half times.

Please read Arteries and Characteristics of Arterial Disorders here.

About 100 billion platelets are produced daily. Without them, a bleeding will not stop.

A drop of blood contains about 250 million cells.

The middle finger has the fastest growing nail.

The skull is made up of 22 different bones.

Please read on Bones and Types of Bone here.

The left half of your brain controls the right side of your body while the right half of your brain controls the left side of your body.

A human cell is very small and even microscopic but the DNA present inside of it is 6 feet long.

There is no difference between the male and the female embryo in the womb between the first 6 weeks of life.

A person blinks the eye over 11,500 times in a single day.

Certain jelly fish can trigger a process that turns them back into a younger version of themselves. They can do this as much as they want.

50% percent of the human DNA is the same as the DNA of a banana.

Thanks to marine plants and algae because they provide over about 70% of the oxygen on earth.

Please read on the Atmosphere here.

Matured red blood cells have no nucleus.

25% of human bones are present on their feet.

Your sense of hearing is reduced whenever you over-eat.

The liquid inside young coconuts can be used as a substitute for blood plasma.

The higher your intelligence quotient, the more dreams you will have.

We cannot smell when we are sleeping.

You actually hear when you are asleep; the brain just chooses to ignore the sounds.

The muscle of your butt is called the gluteus maximus and it appears to be bigger in females.

The space between your eyebrows is called Glabella.

One in every 20 persons has an extra rib and majority happens to be men.

Elephants feel emotions like compassion, joy and anger. They even bury and mourn their dead.

Some plants feed on insect. (We called them carnivorous or insectivorous plants).

Please read on the Differences between a Plant and a Crop here.

An ostrich lays the world’s biggest egg.

Think of it's size to be equivalent to 30 chicken eggs.

The average person passes out gas (flatulence) about 14 times a day.

Please read on Bloating and Factors that causes it here.

After the age of 18, some of the brain cells start dying and can never be replenished.

You lose about half  litter of water daily through breathing.

The kind of cells that make up the vagina are the same as those that make up the mouth.

You cannot breathe properly without your ribs.

Your toe prints are as unique as your finger prints.

The nose is like an air conditioning system. It warms cold air, cools hot air and also filters impurities from the air.

Like finger and toe prints, we also have tongue prints.

The only bone that is not attached to another bone in the body is the hyoid bone.

This bone is found in the throat and no joint is present around it.

An attempt to eat and swallow at the same time will result to death.

The bacteria inside your mouth alone is more than the world’s population.

The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.

The largest organ INSIDE your body is the small intestine which is 20 feet long.

Generally, the skin is the largest organ on your body.

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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.

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Amazing facts in Biology

Armadillos - Len Academy

Armadillos are western mammals known for their unique armor-like shell which are bulletproof

Polka-dotted zebra - Len Academy

Although 🦓 zebras 🦓 are known for their characteristics black and white stripes, we still have some polka-dotted zebras

Charles Darwin is a British naturalist and biologist who contributed greatly into the study of evolution. According to research, he frequently ate the animals he studied

Lungs are the only human organ that can float on water

Unlike most 🐍 snakes 🐍 that lay eggs, anacondas give birth to live babies

Shrimp - Len Academy

A 🦐 shrimp's 🦐 heart is in its head

Women have more pain receptors than men

It's crucial you finish your antibiotics.

If you stop taking your antibiotics before you're supposed to, any bacteria that didn't get killed can develop an immunity to that antibiotic and become a super-strain, making it much difficult to kill in the future. So keep taking your antibiotics pill, even if you feel better.

Although rare, women can still give birth when they die. This is known as coffin birth

Men can actually get aroused post moterm. This is called priapism


For a thing to be considered Living, it must possess all the Basic Characteristics of Life. These include:

  1. Movement

  2. Respiration

  3. Nutrition

  4. Irritability or Sensitivity

  5. Growth

  6. Excretion

  7. Reproduction

  8. Death

  9. Adaptation

  10. Competition

Please read the explanations on all the Basic Characteristics of Life here

During strenuous exercises like sprinting or 🏃 running, your body may actually work in the shortage of oxygen. During this time, your body owes oxygen (called oxygen debt) and it must be replenished or repayed after the exercise is stopped. This is why you breathe excess of oxygen after you stopped the exercise.

This is the concept of anaerobic respiration

Food Chain - Len Academy

A food Chain is a diagram that shows the relationship between plants and animals within a habitat on the basis of how they rely on each other for food.

Note: Habitat is a place where an organism live. It is of three types:

  • Terrestrial (Land)
  • Aquatic (Water)
  • Arboreal (🌲 Treetops)

You can read on Food Chain here

The term Biology originated from two Greek words. They are:

  • Bios: means life.
  • Logos: means knowledge or to study.

Biology can therefore be defined is the study of life

Anything that has life is generally considered as a living organism (or organism) 🌱🐐🐓. All living organisms must be able to carry the following activities:

  1. Movement
  2. Respiration
  3. Nutrition
  4. Irritability or Sensitivity
  5. Growth
  6. Excretion
  7. Reproduction
  8. Death
  9. Adaptation
  10. Competition

The above listed points are often regarded as the basic characteristics of life. You can memorize them using the acronym (MR. NIGER DAC).

You can read on the introduction to Biology and the basic characteristics of life here

The gas used in the manufacture of food by plants is Carbon dioxide or Carbon(IV)oxide or CO2

Plants manufacture food through a process called photosynthesis.

Please read on photosynthesis here

Note: Plants are the only orgnisms that take away CO2 from the atmosphere