organelles how does the nucleus control the cell? what is the role of the pores?
TRANSCRIPT
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Organelles•HOW does the
nucleus control the cell?•What is the role of
the pores?
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Organelles
www.mol.biol.ethz.ch
•HOW are proteins made at the ribosome?
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• If proteins are made at a ribosome, WHY have a Rough ER?
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Organelles• If you have a
Rough ER, WHY do you need one of these things?
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•What is the difference between a lysosome, and a vesicle? A vacuole?•Vesicles are TRANSPORT•Vacuoles are STORAGE•Lysosomes are ‘digestive’
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•VACUOLE•LARGE vacuole for storage (water and/or nutrient) and structure• Plants and some single-celled animals
•SMALL for nutrient storage…. Animals•They can have many
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What is being shown/made here?
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Which is a secretory vesicle?
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Organelles•HOW is this the
“powerhouse” of the cell?• Inheritance?
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Organelles•HOW does this
‘make sugar’?• Inheritance?•MOSTLY maternal
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Cytoskeleton
•Role of:microtubulemicrofilamentintermediate filament
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Cytoskeleton
• Evolution of muscles?
MicrofilamentSAME protein as muscle fibers
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Phospholipid Bilayer/Cell Membrane•HOW does this regulate
what comes in to and goes out of the cell?•HYDROPHOBIC • “water fearing”•HYDROPHYLIC• “water loving”
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Phospholipid Bilayer/Cell Membrane
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Phospholipid Bilayer/Cell Membrane•Could this be reversed?
WHY?• Fluid Mosaic – the
membrane is about the consistency of vegetable oil at room temp• Stays together, but not
rigid like a cell wall• Steroids present to keep
from freezing
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Phospholipid Bilayer/Cell Membrane•What is the
role of the proteins in the membrane?•Carbohydrate
chains?
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Phospholipid Bilayer/Cell Membrane
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Questions?
•Objective 13• Finish for Homework