CTools012811lecture10

CTools012811lecture10 - Biology 172 Lecture 10: Friday,...

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Lecture 10: Friday, January 28, 2011 Biology 172 Today’s Outline Announcements • Exam 1 is Monday, Jan. 31,  6-8 pm  (150 pts) • Review in both sections of  class on  Monday -  come with questions Properties of Eukaryotes - Cell Support - Protein Transport and Targeting Signals Extracellular Matrix Cell-Cell Connections
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Properties of Eukaryotes v Information processing - in nucleus v Matter processing - disposal, degradation v Synthesis v Export v Recycling v Energy processing v Cell Shape, Support Ø Microfilaments Ø Intermediate Filaments Ø Microtubules
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Cytoskeleton - filamentous network of proteins - provide structure, organization, and movement to cells 1. Microfilaments - made of actin - involved in muscle contraction, cytoplasmic streaming and more
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Cytoskeleton - filamentous network of proteins - provide structure, organization, and movement to cells 1. Microfilaments - made of actin - involved in muscle contraction, cytoplasmic streaming 2. Microtubules - made of tubulin - involved in chromosome distribution, cell motility (cilia and flagella) & more
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Cytoskeleton (euks) - filamentous network of proteins - provide structure, organization, and movement to cells 2. Microtubules - made of tubulin - involved in chromosome distribution, cell motility (cilia and flagella) 3. Intermediate filaments - various components (e.g. keratin, lamin) - provide structural support 1. Microfilaments - made of actin - involved in muscle contraction, cytoplasmic streaming
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Cytoskeleton: organizes structures and activities in eukaryotic cells Microfilaments Intermediate filaments Cell shape, motility, chromosome movements Cell shape changes, muscle contraction, cell division, cytoplasmic streaming Structural support, anchorage, cell-type specific proteins Microtubules
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Actin filaments in mammalian cell Intermediate filaments in mammalian cell Microtubules in mammalian cell
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Figure 7.29 Actin and myosin interact to cause movement.
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This note was uploaded on 02/13/2012 for the course BIO 172 taught by Professor Clark during the Winter '08 term at University of Michigan.

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CTools012811lecture10 - Biology 172 Lecture 10: Friday,...

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