Download 6. Endoplasmic Reticulum a tube system through the cell that is

5. Nucleolus
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a specialized area of chromatin inside the nucleus
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responsible for the production of ribosomes
Nucleus
Nucleolus
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6. Endoplasmic Reticulum
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a tube system through the cell that is used to transport protein from the nucleus as well as other tasks ­
there are two types of endoplasmic reticulum:
a. Rough ER
b. Smooth ER
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a. Rough Endoplasmic Reticulum
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surface is studded with ribosomes thus giving it a rough appearance
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ribosomes produce protein on the rough ER, which is then packaged and stored in the rough ER
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when it is ready the rough ER moves the protein to the Golgi Bodies for transport around the cell
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Nucleus
Rough Endoplasmic Reticulum
Ribosomes
Golgi Body
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b. Smooth Endoplasmic Reticulum
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acts as a storage organelle in the cell
stores a number of items including steroids which are used by the cell
No Ribosomes
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7. Ribosomes:
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they are both free floating in the cytoplasm and attached to the rough endoplasmic reticulum
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they create the proteins in the cells by joining together strings of amino acids
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because they produce proteins they are key to cell reproduction and development
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Free Floating Ribosomes
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8. Mitochondria ­
membrane bound organelles located throughout the cell
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the powerhouse of the cell, usually rod shaped
­ responsible for energy production in the cell (ATP)
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certain cells contain greater numbers of mitochondria (ex. muscle cells)
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9. Chloroplasts
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found only in plant cells
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give plants their green color because they contain chlorophyll
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converts energy in sunlight to food for the plant (photosynthesis)
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10.
Vacuole ­ temporary storage sac for food, water and waste located in the cytoplasm
­ animal cells have a number of small sacs located throughout the cell
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plant cells have one large central vacuole which allows them to store large amounts of water
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11.
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Vesicles
small membrane bound sacs which move material around the cell or into and outside the cell
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12.
Golgi Bodies
­ groups of sacs which package, store, modify and transport products made by the endoplasmic reticulum (proteins are one example)
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Microtubules / filaments
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proteins that function in the transport of materials within the cell
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14.
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Cilia
hairlike structures that extend from the membrane of the cell
sweep in a wavelike motion to help move the cell, or in the case of the digestive system move food along
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15.
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Flagella
long, hairlike projections that propel a cell using a whipping motion
­ often used by bacteria
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Lysosomes
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membrane bound vesicles filled with digestive enzymes that can break down worn out cell components
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often found more in certain types of cells like liver cells
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Readings:
Pages 23 ­ 33
Activities:
Label the Cells
Worksheets
Questions:
Page 34. #'s 1,2,4,5,6,7,8
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Attachments
EukaryoteProkaryoteStructureUS.notebook