What is the relationship between your stomach and outer space?
Imagine that you are eating a piece of pizza
And you eat it although it was containing a large amount of bacteria
After passing through your mouth and then the esophagus and then to the stomach
Your stomach is very acidic
It secrete an acid called hydrochloric acid
This acid in turn destroys a large amount of these bacteria
In the past, scientists believed that the stomach don't contain any kind of living organisms
They believed that the stomach is sterile
It does not contain any kind of life
Till 1982 the two scientist: Robin Warren and Barry Marshall
They discovered that there is a certain type of bacteria
Helicobacter pylori bacteria
It can live inside the human stomach
Or so-called جرثومة المعدة
That is, he/she is infected with bacteria
They won the Nobel Prize for this great discovery
The question still remains: What is the relationship between your stomach and outer space?
We focus on searching for life within a narrow range
To define life which has the same characteristics as our life on earth
We may believe that certain places can not have any kind of life!
Places like your stomach
We thought it doesn't contain any form of life and we discovered the opposite
50% of the world's population lives inside their stomach this bacteria
But fortunately they are inactive
And do not cause diseases except in a small proportion of people
This means that out of every two people watching this video
One of them has these bacteria inside his stomach
In the late 17th century
Scientists Robert Hooke and Antoni van Leeuwenhoek developed
a very great device
A device that enables us to see a new world of life
The light microscope
Objects we even did not know their existence
Objects which consist of only one cell
I can easily understand that beings like us, as humans, we can organize our lives
We has different organs and functions
But ! It is hard for me to understand how a bacteria with one cell
Very small objects
They can live, grow, reproduce, feed and develop
I can't believe it
Living organism feeds, grows, develops and reproduces and interact with the surrounding environment
This is the definition of life that we studied in school
But! You do not feel that it is a little bit strange?
The cell consists of atoms, and atoms makes organic and inorganic materials
They meet together to form a cell
Cell components are non-living, and become alive
Things that are not alive, when they come together become alive
How non-living components can be alive
Grow, develop and multiply
What is the secret of ''being alive''?
Hey Siddig! Why you are complicating things?!
Why? Siddig, why you make things so complicated, the answer is very simple
Living organisms grow, develop, multiply and eat food
This is bullshit, be scientific, this informations are old
Living organisms have certain characteristics we have studied that in school
Living organisms eat food, drink water
Hear what I say!
Eat food, drink water
Grow and multiply
These are the characteristics of living things
I do not want to talk with you
Anyway, what is more strange, that in the nineteenth century
Scientists have discovered organisms that have properties of living organisms but ..
For example, they do not reproduce on their own
But they need another cell to multiply inside
Scientists called it viruses
If we take the internal composition of the virus, we will find that it is somewhat strange
Strange and simple at the same time
It consists of DNA or RNA
Consists of Ribonucleic Acid or Deoxyribonucleic Acid
The virus consists of DNA/RNA which surrounded by an outer membrane.
DNA/RNA and membrane only
Scientists became suspicious,, are viruses living organisms or not?
Viruses grow, multiply, develop and interact with the surrounding environment
But they depend on another cell to live within
Scientists are asking them selves, are viruses living or non-living organisms?
More surprisingly, in 1971
Scientist Theodore Otto Diner
Discovered a very strange thing
Something very small, which scientists believe it is one of the smallest objects on Earth
Similar to viruses but it is not surrounded by a membrane
RNA only
RNA without an outer membrane
RNA without a cover
It consists RNA only
Even their own RNA, much smaller than the DNA/RNA found in viruses
That's why they called it (Viroids)
As if they were small viruses
These organisms infect plants with certain diseases
Plants only and not animals
Man is an animal and he knows that he is an animal
But the animal is an animal that does not know it is an animal.
thank you thank you
So what do you think of the Viroids? (where did this person go?)
What do you think of Viroids, are they living or not living?
Another thing
Recently they have discovered a very strange objects
Note the word "objects"
These things are just proteins
Misfolded proteins/ Prions
Do not contain DNA or RNA
Although it does not contain DNA/RNA and does not contain any of the characteristics of life
But it is infectious!
I do not know how
Some species cause Mad Cow Disease
What do you think of prions, are they living or not?
If we make a robot which can make another robot
Does this mean that the robot is multiplying
Robot makes another robot
A robot which can make a robot like itself, reproducing itself
Mitochondria is part of the cell's organelles
This mitochondria were a separate cell
But decided to merge with another cell
It is now part of another cell
But so far, it is retaining its own genetic material
But it is no longer a stand-alone entity
Is mitochondria still alive?
Or did she give up her life and become part of a another living being?
I do not have answers for you, just questions
Red blood cells inside your body, do not have DNA/RNA
They lost their DNA, and are now circulating inside the blood vessels without DNA/RNA
They can not multiply
After about 120 days they die, and instead new red blood cells come in
Produced by the bone marrow
But red blood cells do not divided
What do you think of red blood cells, whether they are alive or not?
Viruses are between living and non living objects
Red blood cells also can not reproduce
Are red blood cells alive or not?
You all know that when a horse have sex with a donkey
Produce a hybrid animal called mule
Which is called in Sudan (Dahsh) - not sure
Mule is a cute animal
A mule eats food
A mule drinks water
A mule grows and develops
A mule does not breed
A mule does not reproduce!
Viruses can multiply if they rely on another cell
But the mule does not multiply
What makes us say that the mule is a living animal and the virus is non living object
The mule does not multiply, and one of the properties of living organisms they multiply
Why ? What prevent it from reproducing?
2 mules can not produce one mule
But a virus can produce thousands of viruses
Anyway
We talked about life today, or rather wondered about life
Defining the secret of life may be a difficult question at the moment
We do not have a definitive answer
But admitting that there is no satisfactory answer
It is better for us than to accept unscientific answers
We have just dreamed of a life like a life
You may not care about the definition of life
But I'm interested in making your life meaningful by subscribing to the channel
Click the Subscribe button down below
Thank you for watch, peace be upon you
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