Transcript WHAT IS BIOLOGY?????

WHAT IS BIOLOGY?????
Definition
• Bio - _life_________
• Logy - _study of___________
• Biology - __study of life__________
Characteristics of Life
1) Contains cells – Cells are the basic unit
of life.
Unicellular – contains ONE cell
Multicellular – contains many cells
Characteristics of Life
2) Grow and Reproduction
Types of Reproduction
1)Asexual Reproduction
2)Sexual Reproduction
Characteristics of Life
3) Contain Genetic Material
- DNA
- Instructions for a cell
Characteristics of Life
4) Energy (Metabolism) –
Organisms must obtain energy through
different process
Ex. Cellular Respiration
Ex. Photosynthesis
Characteristics of Life
5) Able to maintain Homeostasis
- The internal balance in an
Environment
Ex. Sweating when you workout
Ex. Shivering when cold
Characteristics of Life
6) Respond to Stimuli – Reaction in their
environment.
Ex. A tree growing in
The presence of
The sun.
Characteristics of Life
7) Being Highly Organized
HIERARCHY OF LIFE
Ex. Cells Tissues Organs
Organ System Organism
SMALLEST STRUCTURAL UNIT OF LIFE
CELLS
PROKARYOTIC
NO NUCLEUS
BACTERIA
EUKARYOTIC
NUCLEUS
PROTISTS,
FUNGI,PLANTS,ANIMALS
TISSUES
GROUP OF SPECIALIZED CELLS
HAVING SAME FUNCTION ARE
DEPENDANT ON EACH OTHER
ORGANS
SPECIALIZED TISSUES PERFORM SAME
FUNCTION
ORGAN SYSTEMS
SPECIALIZED ORGANS PERFORM SAME
FUNCTION
ORGANISM
Characteristics of Life
8) Being able to adapt
Ex. Camouflage