Cell Bio Exam 3 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question/Term | Answer/Definition |
Properties of Intermediate Filaments | Polarity: None Functions: -Structure -Shape -Formation of nuclear lamina and scaffolding -Strengthening of nerve cell axons -Keeping muscle fibers in register |
Properties of Microtubules | Monomers: Alpha-Tubulin and Beta-Tubulin Polarity: +/- ends Functions: -Organization of share and polarity -Chromosome movements -Intracellular transport -Cell motility |
Elements of the Cytoskeleton | 1. Microtubules (MTs) 2. Microfilaments (MFs) 3. Intermediate filaments (IFs) |
Properties of Microfilaments | Monomers: G-actin Polarity: +/- ends Functions: -Muscle contraction -Cell locomotion -Cytoplasmic streaming -Cytokinesis -Shape and transport |
Types of Microtubules | 1. Cytoplasmic 2. Axonemal |
Bacterial-Tubulin Equivalent | Ftz |
Bacterial Intermediate Filament Protein Equivalent | Crescentin |
Protofilament, Heterodimer, Tubulin Monomers | Protofilament: The whole heterodimer and monomer(alpha or beta monomers) all together. Heterodimer: Alpha and Beta monomers. Monomer: An alpha or Beta particle. |
Bacteria Actin Equivalent | MreB |
Vinblastine and Vincristine | -Affect MTs -Aggregate tubulin heterodimers |
Phallodin | -Affects MFs -Binds and stabilizes assembled MFs - (+) No polymerization - (-) No depolymerization |
Taxol | - Affects MTs - Stabilizes MTs - (+) No polymerization - (-) No depolymerization -Everything is stable. |
Latrunculin A | - Affects MFs - Sequesters actin monomers "JAIL" (Puts monomers separately in a corner or "jail" to keep from polymerizing. |
Microfilament Actins | - G-actin - F-actin - G-actin: Monomers of F-actin - F-actin: Polymerized G-actin which form filaments. |
Cytochalasin D | - Affects MTs - Prevents addition of new monomers to plus ends ("thinks plus end is ugly and won't hook up with it") |
Colchicine Colcemid | - Affects MTs - Binds tubulin monomers, inhibiting self assembly (binds to both/either alpha or beta monomers and won't let them polymerize). |
Nocadazole | - Affects MTs - Binds to Beta-tubulin, inhibiting polymerization (thus will not allow the monomers to bind). |
Singlet MTs | - 13 profilaments - Cytoplasmic MTs |
Doublet MTs | - One of the 13 protofilament part and one additional incomplete 10 or 11 protofilament part. - Ex: Cilia and flagella |
Triplet MTs | - One 13 protofilament part and two additional 10 or 11 protofilament parts. - Ex: Basal bodies and centrioles |
Microtubule Nucleation | - When oligomers (groups of aggregated tubulin heterodimers) form nuclei from which MTs grow. |
Microtubule Elongation | - The stage in which nucleated MTs grow by the addition of subunits at either end. |
MT Lag Phase | Nucleation |
MT Elongation Phase | - Tubulin heterodimers are added to the nucleated MT and it grows. |
MT Plateau Phase | - MT assembly and disassembly are balanced. |
MT Critical Concentration | - The tubulin heterodimer concentration at which MT assembly is exactly balanced with disassembly. |
MT Plus End | - The rapidly growing end of the MT. |
MT Minus End | - The slowly growing end of the MT OR - The depolymerizing end when the critical concentration is reached for the plus end, but not the minus end. |
Treadmilling | - When a given tubulin molecule incorporated at the plus end is displaced progressively along. -The MT eventually are lost by depolymerization at the opposite end. |
MAPs | -MT-associated proteins. -MAPs increased MT stability and can affect the density of bundles of MTs. -Tau: Causes MTs to form tight bundles in axons. -MAP2: Causes the formation of looser bundles of MTs. |
Tau | Causes MTs to form tight bundles in axons. |
MAP2 | Causes the formation of looser bundles of MTs. |
Created by:
elenaekaterinburg
Popular Science sets