A cell is a cell but how can you tell?

Robert Hooke-1665

• Examined many living and non-living things under the microscope.

• Living things seem to be made of “compartments”

• He called these compartments, cells

Cork is the outer bark of an evergreen oak

Cells

• Are made up by organelles or parts that have specific jobs.

More info on size of cells

• the Ostrich egg is the largest cell on Earth

• It is about the size of a football

• mycoplasma bacterium is the smallest cell in the world.

• It is only ten micrometers

Cell Membrane• the thin layer

of protein and fat that

surrounds the cell.

Jello Model:

Plastic ziploc bag

Cytoplasm• the jellylike

material outside the

cell nucleus in which the

organelles are located.

Jello Model:

gelatin

Golgi Body

• a flattened, layered, sac-like organelle

that looks like a stack of pancakes

• packages proteins and carbohydrates

into vesicles for "export" from the

cell.

Jello Model:Folded hard ribbon candy

Lysosomes• round organelles

surrounded by a membrane and

containing digestive

enzymes. • digestion of cell

nutrients takes place here

Jello Model”

M & M Candy

Mitochondria• spherical to rod-shaped organelles

*the inner membrane is

infolded many times • Gives energy to the

cell

Jello Model:

raisins

Nucleus• spherical body containing many

organelles• controls many of

the functions of the cell and

contains DNA (in chromosomes).

Jello Model:

A plum

Ribosomes

• small organelles where proteins are made.

Jello Model:

Candy sprinkles

Endoplasmic ReticulumIt functions as a packaging system.

It creates a network of membranes found through the whole cell

• Smooth

It acts as a storage

organelle. For example:

It is important

in the creation and

storage of steroids.

Jello Model:Gummy worms

• RoughThey are very important in

the synthesis and packaging

of proteins. Some of those

proteins might be used in

the cell and some are sent

out.

Jello Model:Sour gummy worms-rough

Endoplasmic Reticulum

Vacuoles

• Vacuoles are essentially enclosed compartments which are filled with water containing important stuff for the cell dissolved in it

What do plant cells have that animal cells do not?”

• Cell Wall

• Chloroplasts

Plant Cells

Cell Wall-only in plants

• A rigid structure that protects the plant

• Provides structure and shape

Chloroplasts

• Capture sun light and chemically change it to sugar.

• Chloroplasts are the food producers of the cell.

Organelles of a Animal CellCell membrane

NucleusRibosomesCytoplasm

MitochondriaEndoplasmic Reticulum

Golgi Apparatus or bodiesVacuole

CytoplasmLysosome

Organelles of a Plant CellCell Wall

Cell membraneNucleus

RibosomesChloroplastCytoplasm

MitochondriaEndoplasmic Reticulum

Golgi Apparatus or bodiesVacuole

Cytoplasm