Transcript Endoplasmic Reticulum - Brandywine School District

Cell Structures and Functions
•Boundary of the cell
•Keeps all parts of the cell inside (bi-level phospholipid layer)
•Has openings where items may enter and exit cell (aided by
protein transports)
Cytoplasm
 AKA Protoplasm
 Gel-like substance filling the space between
organelles/parts inside of a cell
 Mostly made of water
The Nucleus:
enclosed by the nuclear
membrane, contains DNA,
houses the nucleolus
Function:
To control all of
the cell’s activities
and create
ribosomes
Endoplasmic Reticulum
 A.k.a. “ER”
 Connected to nuclear
membrane
 Highway of the cell
 Rough ER: studded
with ribosomes; it
makes proteins
 Smooth ER: no
ribosomes; it makes
lipids
Ribosome
 Site of protein
synthesis
 Found attached to
rough ER or floating
free in cytosol
(cytoplasm)
That looks familiar…what is a
polypeptide?
GOLGI COMPLEX
(Apparatus)
 Shaped like a stack of
pancakes
 Has a job similar to ER
 Packages together simple
molecules to be stored in
vesicles to be used later
or expelled from the cell
 Creates lysosomes
Lysosomes
 Garbage disposal of
the cell
 Contain digestive
enzymes that break
down wastes
 Can digest nutrients,
or even organelles!
Which organelles do
lysosomes work with?
•Power Houses of the cell
•Act like our digestive system (takes in nutrients, breaks them
down, and creates energy for the cell - cellular respiration)
Vacuoles
•Storage bubbles in the
cell
•Can house nutrients,
wastes, or excess water
form the cell
http://micro.magnet.fsu.edu/cells/plantcell.html
http://www.fossweb.com/modulesMS/DiversityofLife/index.html
http://www.nsf.gov/news/overviews/biology/interactive.jsp
http://biology.clc.uc.edu/courses/bio104/cells.htm
http://cellsalive.com/cells/cell_model.htm
http://www.biology4kids.com/files/cell_main.html
Cell Membrane (red) Nucleoplasm (yellow) Mitochondria (red) Lysosome (pink) -
Cytoplasm (leave white) Microtubules (brown) Ribosome (blue) Nucleolus (gray) Golgi Apparatus (purple) Smooth Endoplasmic - Reticulum (green) Rough Endoplasmic Reticulum (orange) Nuclear Membrane (dark brown) -