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The Cell City
Cell Structure: Plasma Membrane
City Part: City Wall/Boundary
• Flexible, selectively
permeable boundary
that helps control
what enters and
leaves the cell
Cell Structure: Cytoplasm
City Part: Lakes, Streams & Rivers
• Semi-fluid material
that organelles float
in
Cell Structure: Cytoskeleton
City Part: Foundations
• Supporting network
of long thin protein
fibers that form a
framework for the
cell
• Provides an anchor
for the organelles
inside the cell
Cell Structure: Nucleus
City Part: Mayor’s Office/City Hall
• Directs all cell
processes
• Contains cell’s DNA
• Center: Nucleolus
(makes ribosomes)
Cell Structure: Ribosome City Part: Factory
• Manufactures
proteins
• Made of RNA &
protein
Cell Structure: Endoplasmic Reticulum City Part: Highway/Road System
• Responsible for
production of
proteins and lipids
• Transports materials
• Rough E.R.: contains
ribosomes
• Smooth E.R.: no
ribosomes
Cell Structure: Golgi Apparatus
City Part: Post Office
• Modifies, sorts, and
packages proteins
into sacs called
vesicles
Cell Structure: Vacuole
City Part: Storage Units
• Sac used to store
food, enzymes, and
other materials within
the cytoplasm
Cell Structure: Lysosome
City Part: Garbage Company
• Digests worn-out or
extra organelles and
food particles
Cell Structure: Centrioles
City Part: City Blocks
• Made of
microtubules
• Aids in cell division
Cell Structure: Mitochondria City Part: Power Plant
• Generates energy for
the cell
• Converts fuel
particles into usable
energy
Cell Structure: Chloroplast
City Part: Solar Power Plant
• Captures light
energy and converts
it into chemical
energy through a
process known as
photosynthesis
• Plant cells only
Cell Structure: Cilia & Flagella
City Part: Taxi/Bus Service
• Aids in movement of
the cell
• Cilia: short, hair-like
projections
• Flagella: long, moves
with a whiplike
motion