The Nucleic Acids
The nucleic acids are the building
blocks of living organisms.
There are two main types of nucleic
acids:
·DNA means deoxyribonucleic acid.
·RNAmeans ribonucleic acid.
The are called nucleic acid because
scientists first found them in the nucleus of cells.
Now, we have better equipment, and
scientist have discovered nucleic acis in mitochondria, chloropasts,
and cells that have no nucleus, such as bacteria and viruses.
Nucleic acis form long chains of
pairs, that make a shape called a double helix. Each pair is called a
run.
DNA holds your genetic infomation.
Everytyhing you are in your body is
encoded in the DNA found in your cells.
Nucleic acids are made of five parts
called nucleoides:
·Uracil
·Cytosine
·Thymine
·Adenine
Guanine
By Carmen López, Jenifer Moreno.
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By: José Antonio Gandullo Torres.
The
atom
The
atom is the basic unit of matter.
Atoms
are the building blocks of molecules.
You
need at least two atoms linked by a covalent chemical bond to form a
molecule.
The
atom consists of a nucleaus surrounded by a cloud of electrons.
Everything
is made of atoms, and atms are by particles of matter
you
are made of billions of atoms, but we can find only 40 different
types of atoms (elements) mostly hydrogen and oxygen
By: José Antonio Gandullo Torres.
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