2. 1. Plasma Membrane
Outermost component of the
cell.
Encloses the cytoplasm and
forms the boundary between
material inside and materials
outside the cell.
3. Structure of the Plasma
Membrane
The plasma membrane is a double layer
(bilayer) of proteins and phospholipids
and is fluid rather than solid.
This can be interpreted by the fluid
mosaic model developed by Jonathan
Singer and Garth Nicolson in 1972.
5. Function of the Plasma
Membrane
Regulate material moving into and out
of the cell.
Separate the internal and external
part of the cell.
Provide a large surface area on which
specific chemical reactions can
occur.
6. Functions of the Plasma
Membrane
Separate cells from one another.
Site for the receptors containing
specific cell identification markers
that differentiate one cell type from
the other.
7. 2. Cytoplasm
Semifluid enclosed within plasma
membranes and are consist of
organelles, cytosol and other
structures.
11. 4. Endoplasmic Reticulum
an extensive membranous
network continuous with the
outer nuclear membrane.
Contains series of channels and is
storage unit for enzymes and
other proteins.
16. Smooth Endoplasmic
Reticulum
Sitefor lipid
production, detoxification of a
wide variety of organic
molecules and storage of
calcium ions in muscle cells.
Don’t have ribosomes
attached on it.
18. 5. Golgi Apparatus
Collection of membranes
associated physically and
functionally with the ER in the
cytoplasm.
Named after Camillio Golgi,
1998.
22. 6. Mitochondrion
Double-membrane bound
organelles that are spherical to
elongate in shape.
Powerhouse of the cell.
Contains its own DNA.
24. 7. Lysosomes
Membrane bound spherical
organelles that contain
enzymes called acid
hydrolases, which are capable
of digesting organic molecules
under acidic conditions.
27. 8. Centrioles
Located within microtubule-organizing
center.
Contains nine triplet microtubules
Forms basal body of cilia and flagella.
Function in mitotic spindle fiber
formation.
35. 12. Vacuoles
Membrane surrounded, often
large sac in the cytoplasm.
Storage site of food and other
compounds, also pump water
out of a cell.
37. 13. Cytoskeleton
Interconnecting microfilament
and microtubules; flexible
cellular framework.
Assist in cell movement;
provides support; site for
binding of specific enzymes.
39. 14. Peroxisomes
Small membrane bound
vesicles containing enzymes
that break down fatty acids,
amino acids, and hydrogen
peroxide (H2O2).
41. 15. Cell Wall
Rigid (up to many micrometers
in thickness) and gives plant
cells a very defined shape.
Composed of cellulose fiber,
polysaccharides, and proteins.
42. Function
1. Cell stability
2. Determines its shape,
3. Influences its development,
protects the cell against
pathogens
4. Counterbalances the osmotic
pressure.