c430 TCA cycle

The flashcards below were created by user Anonymous on FreezingBlue Flashcards.

  1. 1. What is the central area of metabolism of all macronutrients?

    2. What enzyme is responsible for turning pyruvate --> Ac CoA?

    3. How much ATP (% and # ATP) can be created under aerobic conditions? Anaerobic? (#)

    4. What are characteristics of a multi-enzyme complex? (2)
    1. Citric Acid Cycle

    2. PDH copmlex (pyruvate dehydrogenase complex!)

    3. ~38 ATP (40%), 2 ATP

    4. (1) At least one enzyme noncovalently associated with multi enzyme complex (2) catalyzes at least 2 sequential rxns
  2. What are advantages of a multienzyme complex? (3)
    1. Increases collisions (having 5 sequential reactions all in the same place makes it easier for substrates to bump into and react w/ each other)

    2. Decreases side reactions (charged organic molecules STAY in sequential reactions, less time to float off)

    3. Allows for coordinate control - one place on multienzyme complex turns ALL rxns off --> this is efficient. Otherwise each enzyme would have their own place to turn off.
  3. 1. Write rxn of pyruvate --> acetyl CoA including structures of pyruvate and acetyl CoA. 
    - dG of above rxn?

    3. What is this structure? label 6 parts (2 of them overlap into one -->3)
    Image Upload
    1. Image Upload

    2. Image Upload
  4. Describe mechanism of pyruvate --> Acetyl CoA

Card Set:
c430 TCA cycle
2013-04-15 03:54:51
c430 exam

exam 3
Show Answers: