14271/quizzes/65155/take lege-Disco. Quiz: Membrane Transport..X rted: Mar 23 at
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14271/quizzes/65155/take lege-Disco. Quiz: Membrane Transport..X rted: Mar 23 at 3:54pm uiz Instructions Question 1 The process of transduction usually begins O after the target cell divides. O when the hormone is released from the gland into the blood O when the signal molecule changes the receptor protein in some way. O after the third stage of cell signaling is completed O when the chemical signal is released from the alpha cell. D Question 2 Which one of the following statements regarding enzyme inhibition is correct? O competitive inhibition is seen a substrate competes with an enzyme for binding to an inhibitor protein O competitive inhibition is when the substrate and the inhibitor compete for the active site on the enzyme O competitive inhibition is when the substrate and the inhibitor compete for the allosteric site on the enzyme They occur in an uninterrupted bilayer, with membrane proteins restricted to the surface of the membrane.Explanation / Answer
1) the process of signal transduction starts when an effector molecule comes and bind with the receptor and change the conformation of the receptor to further recruit or activate the signal molecules. option C.
2) in competitive inhibition of the enzyme the substrate and the inhibitor both compete for the active site of the same enzyme. thus it increase the Km of the substrate and maximum velocity is unchanged. option B.
3) option D. in feedback inhibition the final product of the reaction is responsible for inhibiting their own synthesis reaction.
4) option A. enzymes are specific in nature.
5) optionB. CO2 can easily diffuse through plasma membrane.
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