10/17/2010
organelle
Comparing the cell to a factory
organelle
specialized structure in a cell “little organ”
specialized structure in a cell
cytoplasm
Cytoplasm
portion of the cell outside the nucleus
Nucleus
In the Nucleus
Nuclear envelope
Nucleus
contains DNA and instructions for protein
construction
1
10/17/2010
In the Nucleus
Nuclear envelope
In the Nucleus
Nuclear envelope
In the Nucleus
chromatin
2 membranes
2 membranes Pores allow material to move
in and
10/17/20101
Comparing the cell to a factory
organelle
specialized structure in a cell
organelle
specialized structure in a cell
“little organ”
cytoplasm
portion of the cell outside the nucleus
Cytoplasm
Nucleus
Nucleus
contains DNA and instructions for proteinconstruction
In the Nucleus
Nuclear envelope
10/17/20102
In the Nucleus
Nuclear envelope
2 membranes
In the Nucleus
Nuclear envelope
2 membranes
Pores allow material to movein and out(RNA and proteins)
In the Nucleus
chromatin
In the Nucleus
chromatin
granular material in the nucleus
In the Nucleus
chromatin
granular material in the nucleus
made up of protein and RNA
In the Nucleus
chromasomes
In the Nucleus
chromasomes
threadlike structures in thenucleus
In the Nucleus
chromasomes
threadlike structures in thenucleus
contain genetic info passed on tonext generation
In the Nucleus
nucleolus
10/17/20103
In the Nucleus
nucleolus
small dense region in the nucleus
In the Nucleus
nucleolus
small dense region in the nucleus
site of ribosome assembly
NucleusNucleus
Ribosomes
Ribosomes
small particles of RNA and protein found incytoplasm
Ribosomes
small particles of RNA and protein found incytoplasm
proteins are assembled on ribosomes
Ribosomes
small particles of RNA and protein found incytoplasm
proteins are assembled on ribosomes
ribosomesfollow coded instructions fromthe nucleus
Ribosomes
10/17/20104
Ribosomes
EndoplasmicReticulum
Endoplasmic Reticulum
internal membrane system
Endoplasmic Reticulum
internal membrane system
site for modifying or assembling:lipids for cell membranesproteinsother cell exports
Endoplasmic Reticulum
2 types
Endoplasmic Reticulum
2 types
Rough Endoplasmic Reticulum (E.R.)
Endoplasmic Reticulum
2 types
Rough Endoplasmic Reticulum (E.R.)
Smooth Endoplasmic Reticulum (E.R.)
Endoplasmic Reticulum
Rough E.R.
Endoplasmic Reticulum
Rough E.R.
covered in ribosomes