The Cell City

Cell Structure: Plasma MembraneCity 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: CytoskeletonCity 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