pre-icfes - biology cell biology part 1 ms. marcos - 2010-2011
TRANSCRIPT
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Pre-ICFES - Biology
Cell BiologyPart 1
Ms. Marcos - 2010-2011
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Cell Structures and Functions
Take the Cell Biology Challenge!
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A prokaryotic cell
A eukaryotic cell
Prokaryotes vs. Eukaryotes
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Us vs. Them -Eukaryotes and Prokaryotes
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Celula Animal
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Celula Vegetal
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Study Tip: Make a table
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Study Tip: Draw a Venn Diagram
Plant vs. Animal Cells
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How will the cell respond?
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Movement Across a Membrane
•Simple Diffusion
•Osmosis diffusion of WATER
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Cell Membranes – What are the parts?
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What can get across a membrane?•Ions?•Sugar?•Protein?•Water?•Oxygen?
•What rules define whether something can enter/exit a cell via diffusion?
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Define the terms:
Diffusion
Facilitated Diffusion
Active Transport
Give examples
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Endocytosis and Exocytosis•Is this active or passive transport?
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Three types of Endocytosis
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More questions...
•How big are cells?•What needs to enter/exit a cell?•How does it get in/out?•What determines how large a cell can get?•How can cells get larger and still function?
•Why do cells need to divide?•What must cells do before dividing?
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Mitosis:
What is happening at each stage?
http://www.cellsalive.com/mitosis.htm