6 CHARACTERISTICS• Required for all living things:• Cells• DNA• Energy• Grow• Reproduce• Respond

CELL THEORY• All cells come from cells.

• Cells are the basic unit of all living things.

• All living things are

made of cells.

CELLS• Cells are individual units (smallest

living unit) surrounded by a membrane.

• Specialized for the job it has.

• Cells work together to make up organisms (you).

DNAOur genetic code/Blueprints for life.

In ALL Cells.Specific match-up

of 4 bases:G = CA = T

DNA• CHROMATIN

– Long strands of DNA

ie: spaghetti

• CHROMOSOME– Condensed DNA

ie: macaroni

-anyone hungry?

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PROKARYOTIC• BACTERIA cell• Single-celled

organisms• Reproduces

asexually.• Can be +, -,

or neutral.Usually spheres,

rods or spirals.

BACTERIAEUBACTERIA

-most common

-many varieties

ie: yogurt, cheese

ARCHAEBACTERIA

-rare, lives where nothing else can

ie: salt flats, depths of ocean, old faithful

TYPES OF CELLSPROKARYOTICPROKARYOTIC

-no membrane-covered

organelles.(DNA &

ribosomes.)ie: bacteria

EUKARYOTICEUKARYOTIC

-has membrane-covered

organelles.

ie: plant & animal

EUKARYOTIC CELLS• Cells that have

many parts

inside to carry out different jobs.

• Usually in multi-celled organisms.

COMPARE

COMPARE AGAIN

CELL PARTS

-Separates from environment.

-Allows certain things through.

• Jell-substance between membrane & nucleus.

• Cushions organelles.

ORGANELLES..?• Organelles are parts of the cell that

have special jobs to do within the cell.

-similar to jobs that people have to run a city.

• Organelles look different because of their specific job.

LET’S GET STARTED…NUCLEUS-Boss; directs all

w/in the cell.-holds DNA.-has nucleolus

(mini-me) that makes ribosomes.

RIBOSOMES• Small & many.

• Non-membrane organelles.

• Make proteins.

• Made inside of nucleus.

• Pro & Euk cells.

E.R.• ENDOPLASMIC RETICULUM

• Internal delivery system.

• Tubes & passageways to deliver materials throughout the cell.

• SMOOTH- deliver lipids

• ROUGH- deliver proteins

E.R.

MITOCHONDRIA -Powerhouse;

creates energy for cell.

-double-membrane for surface area.

GOLGI BODIES• External

delivery service.• Package &

deliver outside of cell.

• VESICLES- pinched off package.

VACUOLE• STORAGE

UNIT

• 1 large in plants

• Few small in some animal cells.

REVIEW COMMON PARTS• Cell membrane-barrier• Nucleus- boss• Ribosomes- producer• E.R.- Internal delivery• Golgi Bodies- External delivery• Mitochondria- powerhouse.• Vacuole- storage.

PLANT CELL ONLY

CHLOROPLAST- creates food for cell.

–Double-membrane for surface area.

PLANT CELL ONLYCELL WALL-

-gives structure & support.-nonliving-made of cellulose.

ANIMAL CELL ONLYLYSOSOME- clean up crew

–Gets rid of waste & dead parts.

–Enzyme to break down particles.