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23 Cards in this Set
- Front
- Back
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Structures responsible for initiating microtubules in animal cells |
Centrosome |
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It contains two barrel shape --- surrounded by --- |
Centrioles - Pero centriolar material (PCM) |
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Outer microtubules in a cilia and flagella are generated at a structure known as |
Basal body |
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It is found in all MTOCs any is critical for MT nucleation |
Y tubulin |
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Four distinct arrays of microtubules in a dividing plant cell |
Widely distributed throughout the cortex Making a single transverse band In the form of a mitotic spindle As a phargmoplast assisting in the formation of the cell of daughter cells |
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Dynamic properties of Microtubules |
Newly for microtubules branch at an angle of pre-existing microtubules Changes in microtubules facial organization a combination of two mechanisms : Rearrangement of existing microtubules and disassembly of existing microtubules and reassembly of new ones in different locations |
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The underlying base is a Microtubule dynamics |
Cell homogeneous possesses all of the micromolecules needed for assembly. Microtubules assemble in vitro may have abnormal protofilament numbers into absence of template Assembly is aided by MAPs in pieces of microtubules that serve as templates |
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Length of a single MT in growth cone of a neuron over time |
Dynamic instability |
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Dynamic instability |
Growing and drinking microtubules can coexist in the same region of a cell A given microtubules can switch back and forth between growing and shortening phases It is an inherent property of the plus end of the microtubules Proteins called +TIPS regulates the rates of growth in shrinkage |
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Hair like motile organelles |
Cilia and flagella |
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The unicellular argao labeled flagellar membrane protein |
Eukaryotic flagella |
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The process responsible for assembling and maintaining flagella |
Intraflagellar transport (IFT) |
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It is required for atp hydrolysis which supplies energy for locomotion |
Ciliary (axonemal) dynein |
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It's myofibril consists of a repeating arrays of |
Sarcomeres |
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It is a multinucleate cell as a result of fusion of myoblast from the embryo |
Skeletal muscle fiber |
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Provide a template for adding actin monomers |
Nucleating Proteins |
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Bind to actin-ATP monomers and prevent them from polymerizing |
Monomer sequesting proteins |
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Regulates the length of actin filaments |
End blocking proteins |
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Promote the growth of actin filaments |
Monomer polymerizing proteins |
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Bind actin ADP subunit for rapid turnover of actin filaments |
Actin filament depolarizing proteins |
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Alter the three-dimensional organization of actin filaments |
Cross-Linking proteins |
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Shorten filaments and decrease cytoplasmic viscosity |
Filament severing proteins |
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Link contractile proteins to plasma membrane |
Membrane-binding proteins |
