CH. 3 CELLS

Gives the cell shape, structure and helps it move

Made of: Microfilaments Intermediate filaments

Microtubules

CYTOSKELETON

The “goo” that surrounds the nucleus

Keeps everything in place

Organelles are suspended in cytoplasm

CYTOPLASM

RIBOSOMES

Ribosomes are the site of ??

Ribosomes•Structure-spheres composed of RNA and protein

•Function-site of protein synthesis

•Free ribosomes make proteins that remain inside the cell

•Attached ribosomes make proteins that become part of the cell or are exported from the cell

T H E S E R I B O S O M E S A R E A T T A C H E D T O W H A T

O R G A N E L L E?? T H E S E A R E F R E E R I B O S O M E S ( I N T H E C Y T O S O L ) .

Nucleus

Found in what type of cell??Function:

1. Control headquarters for the cell.

2. Structure:

• Where is the nucleus found

• Contains the genetic material-chromosomes- made of DNA & proteins

• Surrounded by a double membrane-nuclear envelope/membrane

• Inside is a nucleolus that makes ribosomes

AKA… the

________??

Nucleus

??

ENDOPLASMIC RETICULUMROUGH

Structure: Network of membranes

near nucleusWhy is it considered

rough??

Function: Transports proteins that were made by the attached ribosomes through the cell to the golgi.

ENDOPLASMIC RETICULUMSMOOTH

Structure:

Network of folded membranes throughout cell

Why is it considered

smooth??Function:

Makes lipids and breaks down toxic substances.

GOLGI APPARATUS

Location In the cytoplasmStructure

Closely stacked, flattened membrane sacs

Function Stores, packages, and

transports products inside for use outside

Vesicles (a bit of the golgi pinches for transport of stored materials).

VESICLE

Small sac in the cell

Usually full of liquid

Golgi Apparatus

WHERE WAS THE GOLGI APPARATUS FOUND??WHAT WAS THE FUNCTION??

LYSOSOME (NOT FOUND IN PLANTS)

Structure-

Saclike

What does the lysosome contain?? Function-

Digests food particles

Digests old organelles

MITOCHONDRIA (FOUND IN ALL EUKARYOTIC CELLS)

Structure-OvalInside is a complex matrix of folded membranes. To

increase surface area.

Function-Changes energy stored in food into a more useful

formMitochondria produces what important energy

storing molecule??

Made of protein

Found in animal cells

Help pull apart cells in mitosis

CENTRIOLE

What kind of cell is this???

VACUOLE

Location cytoplasm Structure

sac of fluid surrounded by a membrane

FunctionSites of storage of water, ions and some nutrients.

Plants: allows plants to maintain turgor pressure, holds water to prevent wilting.

What would be the role of the large central vacuole

in osmosis??

CHLOROPLAST.

Where is the Chloroplast

found???Structure

Double phospholipid bilayer. Inner layer

Stacks = grana Non stacked area = stroma

FunctionCapturing radiant energy and

converting it to chemical energy. WHAT IS THE NAME OF THE PIGMENT RESPONSIBLE FOR THE GREEN COLOR IN A CHLOROPLAST??

CELL WALL

Locationsurrounding Plant cells

Structurecontains polysaccharide cellulose

FunctionProvides structure and support

for plant cells

____________ are found only in Plant cells. They take in light energy and store it in carbohydrates during photosynthesis.

Note the cell wall and central vacuole in this diagram of a plant cell. They are also found only in plant cells.

The function of the vacuole is????Why is the cell wall important to the plant cell??

Plant Cell Recap