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Transcript
Cell Organelles
Eukaryotic Cells
Cell Parts
• Cells – the basic
unit of life
• Organelles small structures
inside a cell with
specific
functions.
Cell or Plasma Membrane
Cell
membrane
Function - Regulates materials entering and exiting the cell.
Structure - Two layers of phospholipids, proteins
Cytoplasm
Cytoplasm
Function - All cell contents that lie between the cell membrane
and the nucleus. (organelles + cytosol)
Cytosol - liquid portion/non-organelles.
Structure - made up of fluid and organelles except for nucleus
Nucleus
Nucleus
Function - “Control Center.” Regulates DNA & RNA
actions.
Structure - membrane bound, contains DNA
Nuclear Envelope
Nuclear
Envelope
Function - Regulates what enters or exits the nucleus.
Structure - Double Layer of Lipids
Nucleolus
Nucleolus
Function - Produces RNA, which are used to make all
proteins.
Structure - Inside Nucleus, separate from DNA
DNA – Deoxyribonucleic acid
DNA (chromatin)
Function - information on how to make proteins.
Chromatin – unorganized DNA (normal state)
Chromosomes – organized DNA (present before cell division
Structure - Made up of nucleotides, locked in the
nucleus
Endoplasmic Reticulum
Rough ER
Smooth ER
Function - Transportation route for proteins.
Rough ER: has ribosomes
Smooth ER: no ribosomes
Structure - tubes and channels
Ribosomes
Ribosomes
Free
Ribosomes
Function: Makes proteins.
Structure: small circular organelles
Vacuoles & Vesicles
Vesicles
Function - Storage for water, nutrients or waste.
Structure - small membrane-bound organelle.
Cytoskeleton
Microfilaments
Microtubules
Function - Provide support and structure for the
cell.
a. Microfilaments
b. Microtubules
Structure: Tubules
Centrioles (Animals Only)
Centrioles
Function - microtubules that help divide the cell
during cell division.
Structure - Tubules
Cilia & Flagella
Flagella
Flagella
Cilia
Function - provides movement for the cell or objects
moving by the cell.
Structure
a. Flagella – 1 long fiber
b. Cilia – many short fibers
Chloroplasts (Plants only)
Chloroplasts
Function: site of photosynthesis (converting sun and
CO2 into sugar).
Structure: Membrane bound organelles that contain
chlorophyll
Cell Wall (Plant cells only)
Cell Wall
Function: Provides support for the cell and the plant.
Structure: Made of cellulose