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1. Name the two types of structures that mediate cell-cell contact and are associated with intermediate filaments.
2. The dynamic behavior of microtubules is regulated by a variety of MAPs. What does this stand for?
3. Name the two motor proteins responsible for powering the variety of movements
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- 1) capZ encourages the elongation of actin filaments (true or false) 2)microtubules are tissue specific (true or false ) 3) microtubule-associated proteins stabilize microtubules along their length (true or false)1. The dynamic behavior of microtubules is regulated by a variety of MAPs. What does this stand for? 2. Name the two motor proteins responsible for powering the variety of movements10. The protein integrin binds to actin filaments and, by binding to proteins like fibronectins, connects to collagen. In this manner, integrin ______. (Choose all that apply) controls the permeability of the cytoplasmic membrane suspends organelles within the cytoplasm provides a direct linkage between the cytoskeleton and the extracellular matrix helps keep individual cells in place and connects adjacent cells to each other
- Microtubules are polar filaments; that is, one end is different from the other. What is the basis for this polarity, how is polarity related to microtubule organization within the cell, and how is polarity related to the intracellular movements powered by microtubule-dependent motors?2. Cardiac muscle tissue is similar to skeletal muscle, and highly coordinated contractions of cardiac muscle pump blood through the circulatory system. Repeated contraction stresses the cell membrane of cardiac muscle cells. Give an example of a cell structure that could help to maintain cell structural integrity and stability. What cellular structures between cardiac muscle cells allow them to contract in tandem?Which of the following do not play a role in intracellular movement? microfilaments and intermediate filaments microfilaments and microtubules intermediate filaments and microtubules only intermediate filaments
- 2. For each of the four motor proteins (cytoplasmic dynein, kinesis, myosin-I, myosin-II) summarize its structure, what protein filaments of the cytoskeleton is it interacting, and its function.Give two examples of biological functions that are enabled by microfilaments or microtubules together with associated motor proteins.These could be whole cell functions or functions within the cell.in developing three drugs that all affect the cell skeleton. One of your medicines affects microtubules, one affects actin filament and one affects the intermediate filament called lamin. Based on your knowledge of cell function and structure, describe how you think these drugs could be affect the cell skeleton and act as cancer medicine. Describe this for each of the three drugs you have developed (ie against microtubules, actin filaments and laminate)
- 1. The best description of how muscles move is: spinning basal bodies sliding filaments adding and subtracting globular subunits rotating proteins contracting and expanding proteins 2. The best description of how microtubules move: spinning basal bodies sliding filaments adding and subtracting globular subunits rotating proteins contracting and expanding proteins 3. The best description of how eukaryotic cilia move is: spinning basal bodies sliding filaments adding and subtracting globular subunits rotating proteins contracting and expanding proteinsIntermediate filaments are distinct from microtubules in all of the following EXCEPT: intermediate filaments are more dynamic. intermediate filaments do not have associated motor proteins. intermediate filaments do not need ATP to assemble. intermediate filaments are distinct from microtubules in all of these ways. O intermediate filaments are not directional. * Previous1. Term describing the leukocyte's CAM-dependent migration from the blood vessel out to the tissue. 2. Name the two types of structures that mediate cell-cell contact and are associated with intermediate filaments. 3. The dynamic behavior of microtubules is regulated by a variety of MAPs. What does this stand for?