Biochemistry for nurses What is Biochemistry?
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Biochemistry for nurses
What is Biochemistry?
Biochemistry is the study of the structure, composition and chemical
reactions of substances in living systems
BIOLOGY CHEMISTRY+
BIOCHEMISTRY
Biochemistry for nurses
Biochemistry for nurses
Biochemistry for nurses
Some basic knowledges
Some definitions Organization levels of the human body
Biochemistry for nurses
The atom = nucleus + electrons
electron
nucleus
OXYGEN ATOM
The atom is the smallest chemicalComponent of our body ex: hydrogen
(H), oxygen (O), nitrogen (N) and carbon (C).
Biochemistry for nurses
The molecule = a group of atoms
The atoms get together to form molecules ex: glucose, amino acids, vitamins…
GLUCOSE
Biochemistry for nurses
A big molecule = a macromolecule
Biochemistry for nurses
Mass composition of our body
Percent of mass:
• 65 % water (H2O) •20 % proteins
•12 % lipids• ~1.5 % nucleic acids
• ~ 1.5 % inorganic molecules (mineral salts)
Biochemistry for nurses
The Cell
Our body is composed by 14 billions of cells. The cell is the
basic unity of any living organism.
Ex: muscular cell, nerve cell…
Biochemistry for nurses
The tissueThe tissue is a grouping of the same type of cells. There are various types of tissues
inside our body ex: Muscle, bone, etc…
Biochemistry for nurses
The organ
An organ is a grouping of differents types of tissues in order to perform
a specific function ex: The heart, the pancreas, the liver, the kidneys
etc…
Biochemistry for nurses
Human organ system
An organ system is a grouping of several organs in order to perform a specific function ex: Digestive system, nervous system, respiratory
system, etc…
Biochemistry for nurses
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