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20 Cards in this Set
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🔥🔥What definition of orgenal It is a network of protein fibers extending throughout the cytoplasm of the cell. |
The cytoskeleton |
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✅️❌️cytoskeleton plays a crucial role in many cellular functions |
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What The cytoskeleton includes |
It includes:1. Microtubules. 2. Microfilaments.3. Intermediate filame |
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🔥Part in The cytoskeleton that is Flexible hollow (Cylinders). |
Microtubules |
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What Microtubules consists of |
Consists of 13 columns of tubulin molecules Formed of dimer protein subunits (α- and β- tubulins). |
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✅️❌️Microtubules does not Undergoes assembling and disassembling. |
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🔥🔥🔥🔥🔥Functions of Microtubules وحدة راح تيجي في الاختبار Q1:✅️❌️Maintain cell shape Q2:(it forms the core of motile .......and........ Q3:mitotic spindle thread form of what? Q4✅️❌️:Form tracks for the movement of organelle and plane |
A1:✅️ A2:cilia and flagella) A3:Microtubules A4:is ✅️ |
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What Microfilaments Made of ? |
Made of actin filament protein subunit |
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What The cytoskeleton kind Form bundles or networks |
Microfilaments |
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Functions of microfilaments |
Maintain cell shape.2. Generate movement with myosin in muscles.3. Form cleavage furrow in cell division.4. Form core of bundles in microvilli. |
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Stable structures, tough fibers. |
Intermediate Filaments |
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🔥Formed of several different proteins as keratin fibrous protein. |
Intermediate Filaments |
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Its assembling is irreversible. |
Intermediate Filaments |
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Functions Intermediate Filaments |
Structural support (support cell junctions of cell parts under mechanical stress).2. Stabilize cell shape by anchoring organelles in their places.3. Disorganization & reorganization of the nucleus in cell division.4. Form nuclear lamina under Nuclear Envelope |
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مقارنة جماعية p19 |
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A cell organelle is located near the nucleus |
Centrosome |
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What is formed of 2 centrioles at a right angle to each other. |
Centrosome |
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Each centriole is formed of 9 ............ of MT(Microtubules ) (9 x 3) hollow cylinder. |
triplets |
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✅️❌️In centrosome the microtubules are arranged in a cube. |
❌️ring |
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Whet is the function of Centrosome |
from it microtubules grow out. |
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