if ATP is not present in an ATP requiring rxn, Does it occur slowly?

TalinAagam

Full Member
Apr 24, 2013
146
8
    so if a reaction requires ATP, (ie. a lysis), and ATP is not present, does this reaction occur more slowly in the absense of ATP?
    Here is the exact question from Page 296 in the TPR book

    In the absense of ATP, the Ubiqutination reaction would:

    A. occur more slowly than in the presense of ATP
    b. occur more quickly than in the presense of ATP
    c. not be affecteed
    D. not occur.

    answer according to TPR is D...

    but I think A is the correct ans, because ATP hydrolysis provides energy to reach the activation energy so that is in effect helping the reaction occur faster, correcT?
     
    so if a reaction requires ATP, (ie. a lysis), and ATP is not present, does this reaction occur more slowly in the absense of ATP?
    Here is the exact question from Page 296 in the TPR book

    In the absense of ATP, the Ubiqutination reaction would:

    A. occur more slowly than in the presense of ATP
    b. occur more quickly than in the presense of ATP
    c. not be affecteed
    D. not occur.

    answer according to TPR is D...

    but I think A is the correct ans, because ATP hydrolysis provides energy to reach the activation energy so that is in effect helping the reaction occur faster, correcT?

    ATP hydrolysis drives the endergonic reaction, making the overall reaction spontaneous. Without ATP, the reaction is nonspontaneous and won't occur. You're getting confused between activation energy and spontaneity.
     
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