Levels of organization of matter

Subatomic particles

• Proton (+)

• Electron (-)

• Neutron (+/-)

Atom

• Basic unit of the elements.

Molecule

• Formed by two or more atoms.

Cell

• Structural and functional unit of organisms.

Tissue

• Group of similar cells. (Structure and function)

Organ

• Set of tissue group to perform an specific function.

Systems

• Group of organs.

Organism

• Formed by a group of systems.

Population

• Group of organisms of the same species.

Comunity

• Group of populations.

Ecosystem

• Unit of the integrated nature of all living things.

Biosphere

• Space containing the litosphere, hidrosphere and the atmosphere, where life works.

Scientific method

• Fundamental principles:– Objetivity– Natural origin– Verifiability