Unifying Themes in Life Science These six general themes are levels of organization, the flow of energy, evolution, interacting systems, structure and function , ecology, and science and society.

1. Unifying Themes in the Study of
Life

2. Earth is the home of human beings and organisms, including
animals, plants and microorganisms.

3. Life Science/Biology
•The field of science that deals with the
study of life.
•It involves different disciplines. These
disciplines are connected to one another,
through which the biologist termed as
unifying themes.

5. Biological System
“ The whole is greater than the sum of its
parts.”

6. Biological System
All levels of life have systems of related parts.
A system is an organized group of interacting parts.

7. ECOSYSTEM as a Biological System

8. Biological System
•Biological system applies to all levels of
life from the biosphere all the way down
to the interactions of molecules in cells.

9. All organisms are made up of cells.
The cell is the basic unit of building
blocks of life.
If an organism is made of only one
cell, it is a called UNICELLULAR
If an organism is made many cell, it is
a called MULTICELLULAR.

10. Multicellular Organisms
2 Specialized Cells (for different functions)
Muscle Cells – contract and enable you to move
Nerve Cells – transmit impulses that control your
muscles.

12. STRUCTURE AND FUNCTION

13. STRUCTURE AND FUNCTION
Structure determines function.
• The structure is the shape of the object.
• The function is the object’s specific role.
Proteins with different structures perform different
functions.
Heart muscles have a different structure and
function that stomach muscles.
Different species have different anatomical
structures with different functions.

14. REPRODUCTION AND INHERITANCE

15. INTERACTION WITH THE ENVIRONMENT

19. All organism need a source of
energy to carry out life processes.
Work depends on the source of
energy.
Energy is obtained in chemical
from intake of sugar, fats, and
other
Fuel-like molecules in your food
through the process of metabolism
Metabolism- is a chemical process
that build up or breakdown the
materials

20. REGULATION AND HOMEOSTASIS
The ability of the organism to regulate their internal
conditions is an example or “steady state”.
A mechanism that makes organism regulates their
internal conditions, despite changes I their external
environment
Such activity can be observed in mammals like human,
birds and other forms of organism.

21. ADAPTATION