Topics in BiologySkeleton and Type of Skeletal Materials Bones and Types of Bone Bones and Type of Bone part 2 Red Blood Cells and Hemoglobin Tropical Rainforest and Savanna with their characteristics Desert and Swamp Forest with their characteristics Autotrophic mode of Nutrition Amazing facts in Biology Characteristics of Protists Characteristics of Reptiles
Academic Questions in Biology
Chemical digestion of carbohydrate (cooked starch) begins in the _____.
ANSWER is Mouth
The digestion of carbohydrate (cooked starch) begins in the mouth through an enzyme called salivary amylase (formerly called ptyalin) found in the saliva. This enzyme breaks down the starch present in carbohydrates into maltose. Maltose is a disaccharide. Please read on sugars and disaccharide here.
Note: With regards to digestion, chemical digestion is emphasized. We also have mechanical digestion which involves the grinding action of the teeth.
Biology is a fun subject. In this article, we will look at some amazing facts concerning life (Biology is the study of life); but if you wish to read on the basic introduction to biology, please click HERE.
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 your number of bones now (206 bones).
The smallest cell in humans is the male sex cell (called sperm) while the largest cell is the female sex call (called ovum).
Dolphins and whales live in water, yet they don’t drink water.
Your thigh bone (called the femur) is stronger than a concrete and it carries the weight of your body when you walk.
The human bone marrow produces about 260 billion red blood cell and 135 billion white blood cells daily.
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)
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 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.
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.
The human brain is folded in appearance. The smoother it is, the less intelligent a person becomes.
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 or child’s body (although these germs or pathogens are very weak). Please read our article on immunization HERE.
Cold weather improves the brain retention’s 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 foot 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 your body mass takes up the most oxygen inside your 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.
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.
The left half of your brain controls the right side of your body while the right side 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 our article on 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. Please read our article on the uniqueness of man HERE.
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, anger and so on.
Some plants feed on insect. (We called them carnivorous or insectivorous plants). Please read our article on plants versus crops HERE.
An ostrich lays the world’s biggest egg (imagine it’s size to be equivalent to 30 chicken eggs).
The average person passes out gas (flatulence) about 14 times a day.
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 this bone).
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.
Amazing facts in Biology
An adult human being is composed of about 60% water. In fact, a newly born baby is composed of about 80% of water. This will drop to 65% after a year and finally to about 60% as the child ages
Without saliva, food can never be enjoyed. Food becomes tasteless since saliva is needed to dissolve the chemicals present in food onto the tongue’s taste buds.
Saliva also contains an enzyme called salivary amylase or "ptyalin" which helps to digest cooked starch to maltose. Maltose is a double sugar or disaccharide. Please read on sugars here
NOTABLE POINTS IN Biology
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
In the Biological organization of life, it is said that cells form tissues, tissues form organs and organs form systems. There are 12 systems in the human body; these are: