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SCIENTIFIC INQUIRY
Although both ends of a microtubule can gain or lose subunits, one end (called the plus end)
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Chapter 9 Solutions
EBK CAMPBELL BIOLOGY IN FOCUS
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- The key components of desmosomes are cadherins and. actin microfilaments intermediate filaments microtubulesarrow_forwardDynamic instability is a term that can be applied to which mature cytoskeletal polymer? Neither microfilaments nor intermediate filaments Microfilaments only Both microfilamers and intermediate filaments Intermediate filaments onlyarrow_forwardThe subunits of which filament bind to GTP, a condition that favors the polymerization of the cytoskeletal subunits? O Intermediate filaments Microfilaments O Microtubulesarrow_forward
- The effect of MAP2 on microtubules is similar to the effect of CapZ on microfilaments how? both stabilize the positive end of the filament both bundle the filaments in parallel bundles both increase the instability of the negative end of the filament both nucleate the formation of the filamentsarrow_forwardDetermine whether the following statements apply to microtubules, intermediate filaments, or actin filaments."a. Thinnest cytoskeletal filaments; are associated with the motor protein myosinb. Consist of proteins twisted together into a ropelike formc. Allow certain cells to “crawl” and change the shape and size of the celld. Consist of protein subunits surrounding a hollow coree. Help a cell to resist mechanical stressf. Grow from the cell’s centrosome"arrow_forwarden 67 Oryzalins are chemicals which can disrupt formation of spindle apparatus resulting in abnormal polyploidy, based on the given information which cytoskeleton structures are affected by oryzalins. ed out of Select one: question O a. Actin filament O b. Microtubules O c. Intermediate filaments O d. Desmosomes O e. Microfilamentsarrow_forward
- Intermediate filaments have identical ends and lack polarity, whereas microtubules have two distinct ends with defined polarity. What is the molecular cause of these differences? Please keep brief - 2 sentences/dot points max.arrow_forwardMicrotubules within a cell appear to be arranged in specific arrays. What cellular structure is responsible for determining the arrangement of microtubules within a cell? How many of these structures are found in a typical cell? Describe how such structures serve to nucleate microtubule assembly.arrow_forwardion 92 Oryzalins are chemicals which can disrupt formation of spindle apparatus resulting in abnormal polyploidy, et based on the given information which cytoskeleton structures are affected by oryzalins. pa ed out of Select one: O a. Actin filament g question O b. Microfilaments O c. Desmosomes O d. Intermediate filaments O e. Microtubulesarrow_forward
- 9A. Matching cell structures their functionsiutocues) Answer Structures Function Centrioles 1. Composed of proteins and rRNAs Cytosol 2. Region in prokaryotes contains a chromosome Golgi complex 3. ring of nine outer microtubule doublets (9+2 axoneme) Plasma membrane 4. Support the cell and protect against plasmolysis Ribosome 5. Composed of glycoprotein(s) and involved in transferring material into or out of the cell Transporters 6. contain hydrolytic enzymes and involved in autophagy Receptor 7. Composed of microtubules and sweep mucus out of respiratory tract Peroxisome 8. Controls which material can get in or out of the cell Nucleoid 9. Contains chromosomes and has nuclear envelope Cilia 10. Maintain membrane fluidity 11. contains necessary enzymes for that modify, sort, and package of proteins or lipids for extracellular or intracellular use 12. Fluids baths between organelles 13. Is a ligand-binding site and can receive specific signals from out of the cell 14. Contains catalase…arrow_forwardWhich of the following properties are shared by desmosomes and hemidesmosomes? Select all that apply. They both are protein structures found in eukaryotic cells They both bind extracellular matrix proteins They both bind to intermediate filaments They both bind to acti filamentsarrow_forwardMatch each term with its best description. ___ cell plate a. lump of cells ___ spindle b. made of microfilaments ___ tumor c. divide plant cells ___ cleavage furrow d. spindle originates here ___ contractile ring e. dangerous metastatic cells ___ cancer f. made of microtubules ___ centrosomes g. indentation ___ telomere h. shortens with agearrow_forward
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
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