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1 Lateral Transport in Roots (answers)

1 Lateral Transport in Roots (answers) - SI Leader Anita...

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SI Leader: Anita Vijapura Spring 2010 BSC2011 03/01 Lateral Transport in Roots Transport is regulated by 3 major compartmental structures of most mature plant cells: 1. cell wall 2. cytosol 3. vacuole The plasma membrane is a barrier between which two major compartments: 1. the cell wall 2. the cytosol __transport proteins__ in the plasma membrane regulate traffic of molecules between the __cytosol__ and the __cell wall__. The vacuolar membrane is a barrier between which two major compartments: 3. the cytosol 4. the vacuole __transport proteins__ in the vacuolar membrane regulate traffic of molecules between the __cytosol__ and the __vacuole__. What is the large organelle that can occupy as much as 90% or more of the protoplast’s volume? The vacuole Short-distance transport Short distances transport occur by __diffusion__. (cell to cell) Transport routes (of water and minerals) between cells at the tissue level consists of 3 passages: 1. transmembrane route a. Substances move out of one cell, across a __cell wall__, and into the neighboring cell, then to the next cell and so on… 2. symplastic route a. continuum of cytosol connected by __plasmodesmata__. 3. apoplastic route 1
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SI Leader: Anita Vijapura Spring 2010 BSC2011 03/01 a. continuum of cell walls and extracellular spaces In more plant tissues, the cell walls and cytosol are continuous from cell to cell forming a transmembrane route.
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