Pre-Production

 

 

Production : clicking will dl file from dropbox

 

A. An extracellular molecule tries to move towards a complementary receptor

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B. Based on your previous answer and assuming there are several instances of the complementary receptor present, an extracellular molecule tries to move toward:

  • One specific predetermined instance of the complementary receptor

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  • Any of the complementary receptor instances that are present

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  • Whichever instance of the complementary receptor is closest

 

C.  An extracellular molecule knows the physical location of its receptor

 

D. Based off your previous answer, how an extracellular molecule know the location of its receptor?

  • It can sense the receptor from a distance

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  • It has hard-wired knowledge

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  • It receives a message from else where

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  • It can sense the receptor when it is close to it

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E. What is the mechanism of an extracellular molecule’s movement towards a receptor

  • The extracellular molecule propels itself

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  • The extracellular molecule is released from its source with the correct initial trajectory

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  • The extracellular mole uses other helper molecules to be carried closer to the receptor

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  • The extracellular molecule collides randomly with other molecules

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F. An extracellular molecule can change direction on its own

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  • False

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G.  If extracellular molecules move through random collisions, what determines the chance of a binding event occurring between one of these molecules and a complementary receptor?

 

Need adjustments for this

 

H. A large molecule has a more direct path of motion, whereas a small molecule has a more random path

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  • False

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I. A molecule’s path of motion is more direct when it has been activated, whereas its path is more random when it is inactive

  • True

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  • False

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J.Inside a cell, large molecules are densely crowded so much so that the average distance between two macromolecules is typically less than the width of a single macromolecule

 

K. Inside a cell, empty space is not a factor in the overall direction of diffusion of water and other molecules

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  • False

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L. In the case of simple diffusion across a permeable membrane, once solute molecules reach an equilibrium, they cease to cross the membrane

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  • False

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M. A drop of dye is placed in some water. The water, activing as a solvent, diffuses into the dye in the same wat as the dye, acting as a solute, diffuses into the water

  • True

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  • False

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