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 DNAie: 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.