It’s ALIVE!!! Or, is it?An Unger Power Point

All organisms have 6 characteristics

Cells

Response to stimulus

Reproduction

DNA/”Life Molecule”

Use Σ

Grow & develop

Cell

Subunit of life

Membrane-bound

2 typesProkaryoteEukaryote

Response to Stimulus

React to change

Maintain homeostatis

Reproduction

Ability to produce offspring

Asexual ReproductionONE parent

Sexual ReproductionTWO parents

DNA/”Life Molecule”

DeoxyriboNucleic Acid

Passes on hereditary information

Use Σ

Organisms take in and use energy

MetabolismSum of all chemical reactions

YOU are walking, talking, living, breathing CHEMICAL REACTIONS!

Types of Σ

Chemicals of life

CarbohydratesSugar/Σ

LipidsFat/storage for Σ

ProteinsSome Σ/ made of amino acids

Nucleic AcidsDNA & RNA

One sentence to rule them all.

Nucleic acids provide the information to make proteins, which are then used to break down carbohydrates and lipids to release energy.

Grow & Develop

GrowGet bigger

DevelopΔ form

Necessities of lifeFood

Make it (producer/autotroph)Get it (consumer/heterotroph)OTHER (decomposer)

WaterAllows metabolism to take place

AirCO2 and O2

ShelterRest & security

Proof of LIFE

Back in the day…spontaneous generation

2 experiments prove LIFE from LIFE

Redi…an Italian doc (1600’s)

Fly babies only came from flies!!!!

Pasteur…a Frenchman (1800’s)

The air also let in bacteria.

LIFE from LIFE!!!

How life is organized…

ClassificationHOW we arrange/group organisms based on similarities

EIGHT levelsDomain

Kingdom

Phylum

Class

Order

Family

Genus

Species

Does King Philip Come Over For Green Soup?

What is missing?

DOMAIN!!!

EUKARYOTE

TaxonomyTHE Science of identifying & labeling/naming organisms

Carolus Linnaeus (Swedish botanist 1750s)Binomial Nomenclature

2 name systemGenus & Species

FIRST letter of Genus is CAPITALfirst letter of species is lowercaseBOTH are ALWAYS italicized or underlined

Branching Diagrams/CladogramArrows point TO living organism

Characteristic/trait ALONG branchWhat is missing?

Classification of ALL Life!

Unicellular, Prokaryotic, Auto & Heterotrophs

Unicellular, Prokaryotic, Auto & Hetero

Multicellular, Eukaryote, Decomposer

Multi, Eukaryote, AUTO

Multi, Eukaryote, HETERO

Dichotomous Keys

A tool that helps its user identify natural objects.

Dichotomous means "divided into two parts.”

Each step has TWO choices