Dynamic instability is a: A. Feature of microtubules B. Feature of microfilament
ID: 99766 • Letter: D
Question
Dynamic instability is a: A. Feature of microtubules B. Feature of microfilaments C. Feature of intermediate filaments D. Feature of both microtubules and microfilaments E. Universal feature of the cytoskeleton Which of the following statements about intracellular transport is true? A. Kinesin and myosin move substances along microtubules B. Kinesis moves substances along microfilaments C. Kinesin and dynein move substances along microfilaments D. Kinesin and dynein move substances along microtubules Cadherins are: A. Cell adhesion molecules found in cell junctions B. Proteins involved in attachment of cells to neighboring cells C. Proteins involved in attachment of cells to the extracellular matrix D. All of these answers are correct E. Only A and B are correct junctions composed of cadherins organized as points of adhesion between adjacent cells and connect to the intermediate filaments are referred to as: A. B. Demosomes C. Tight junctions D. Integrins E. None of these answers are correct A cadherin proteins can only bind A. Another cadherin B. Another cadherin of a different type C. Another cadherin of the same type D. The extracellular matrix E. Both A and D are correct Gap junctions and plasmodesmata have what feature in common? A. The both allow direct transport of materials between cells B. The both are made up of protein subunits located in the plasma membrane C. They are both found in plant cells D. The both attach to the cytoskeleton Microfilments increase in length: A. More quickly at one end than the other B. By assembling outward from the centrosome C. In cycles, following rapid depolymerization D. If free tubulin dimers are available E. All of these choice are correctExplanation / Answer
7. Dynamic instability is a (a) feature of microtulues.
8.The true statement about intracelluler transport is (a) Kinesin and myosin move substances along microtubules .
9.Cadherin is (E) only A and B are correct.
10. (d) Integrins.
11. (E) both A and D are correct.
12. (A) the both allow direct trnsport of meterials between cells . Plasmodesmata is found in plant cells & gap junction is found in animal cells .
13. (A) More quickely at one end than the other.
13.
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