Unit 3
The organisation of
the human body
, Unit 1
The organisation of the human body
1 Levels of organisation
Atomic level → Atoms
(Bioelements) Water
Inorganic biomolecules Mineral salts
Molecular level→ Molecules
Carbohydrates
(Biomolecules) Organic biomolecules Lipids
Proteins
Cellular organelles Nucleic acid
Cellular level→ Cells
Tissue
Organism level Organs
Systems
, Unit 1
The organisation of the human body
1 Levels of organisation
Cells First level capable of life, capable of
performing vital functions.
Tissues Group of coordinated cells which perform a
specific function
Organs Tissues group together to form organs, which
carry out a certain function
Systems Formed by groups of organs, share the necessary task
to perform the functions of nutrition, reproduction
and interaction of an organism
Organism
The organisation of
the human body
, Unit 1
The organisation of the human body
1 Levels of organisation
Atomic level → Atoms
(Bioelements) Water
Inorganic biomolecules Mineral salts
Molecular level→ Molecules
Carbohydrates
(Biomolecules) Organic biomolecules Lipids
Proteins
Cellular organelles Nucleic acid
Cellular level→ Cells
Tissue
Organism level Organs
Systems
, Unit 1
The organisation of the human body
1 Levels of organisation
Cells First level capable of life, capable of
performing vital functions.
Tissues Group of coordinated cells which perform a
specific function
Organs Tissues group together to form organs, which
carry out a certain function
Systems Formed by groups of organs, share the necessary task
to perform the functions of nutrition, reproduction
and interaction of an organism
Organism
