1. Today your objective is…
Properties of Life
Today your objective is…
To list and explain characteristics of living things.

2. What is Biology?
Bio- = Life
-ology = Study of

3. Levels of Living Organization
smallest unit of living things
one individual living thing
(Can occur at any level of complexity)
group of similar cells organized to work together
group of different kinds of tissues working together
group of organs working together
organism
organ system
organ
tissue
cell

4. 1. Living things have highly ORGANIZED and COMPLEX STRUCTURES
Properties of Life
1. Living things have highly ORGANIZED and COMPLEX STRUCTURES
DNA
proteins
carbohydrates

5. Living creatures are ORGANIZED
If Everything is made from the same collection of chemicals ( atoms), what makes living things different from nonliving things?
Living things contain mostly organic compounds (at least 2 atoms of C)
plant cell
animal cell
Non-living things contain mostly inorganic compounds (no C or only 1 C atom)
Atoms and Chemicals

6. Properties of Life 2. Living things RESPOND
Respond to internal changes
Homeostasis
maintaining balanced conditions inside the body
Respond to external changes

7. 3. Living creatures use ENERGY
Properties of Life
3. Living creatures use ENERGY
Metabolism
all the reactions your body performs to make & use energy
Eating & digestion, and elimination of wastes
Synthesis (building) chemicals and structures
Cellular respiration = makes energy available to cells
Photosynthesis = stores energy in sugars being produced
mitochondria

8. 4. Living creatures GROW & DEVELOP
Properties of Life
4. Living creatures GROW & DEVELOP
Change over an individual’s life time
get bigger
mature
so they can reproduce

9. 5. Living creatures REPRODUCE
Properties of Life
5. Living creatures REPRODUCE
Make new offspring
Sexual reproduction produces a new unique individual with characteristics from both parents.
Asexual reproduction produces a copy of the signle parent.

10. 6. Living creatures Evolve
Properties of Life
6. Living creatures Evolve
Populations adapt to environments by adaptations being passed down through generations over time.
All organisms are well adapted to their environments.
(Individual organisms DO NOT evolve.)

11. Property of Living Things
Details
Complex organized structure
Respond to Stimuli
Uses Energy (Metabolism)
Growth and Development
Regulation/Homeostasis
Heredity/Evolution
Reproduction
Both molecular and cellular organization. Living things must be able to organize simple substances into complex ones. Living things organize cells at levels: Tissue, Organs, & organ systems.
To maintain homeostasis living things must respond to their external environment: sweating, shivering, fight or flight
All living things use energy…sum of total chemical reactions to provide organism with energy
All living organisms grow, some slowly, some quickly; they also mature in preparation for reproduction.
Make changes internally. Occurs when living things maintain a stable internal environment even though there are changes in the external environment
Ability of an organism to pass on info about itself to its offspring concerning chemical/physical makeup; this allows populations to adapt to environments over time.
Producing offspring through either sexual or asexual reproduction. Necessary for the continuation of life.