BCH 361 CHAPTER 18 TEST QUESTIONS WITH ALL CORRECT ANSWERS
4 views 0 purchase
Course
BCH 361 CHAPTER 18
Institution
BCH 361 CHAPTER 18
BCH 361 CHAPTER 18 TEST QUESTIONS WITH ALL CORRECT ANSWERS
Beriberi involves a reduction in the activity of pyruvate dehydrogenase complex. Which enzyme(s) in the complex is/are specifically affected in this disease through loss or reduction of a prosthetic group? - pyruvate dehydrogenase componen...
BCH 361 CHAPTER 18 TEST
QUESTIONS WITH ALL CORRECT
ANSWERS
Beriberi involves a reduction in the activity of pyruvate dehydrogenase complex. Which
enzyme(s) in the complex is/are specifically affected in this disease through loss or
reduction of a prosthetic group? - pyruvate dehydrogenase component (E1)
When pyruvate initially binds to the pyruvate dehydrogenase complex, which of the
following statements is TRUE? - The cofactor of E3 is in its reduced form
Which of the following is NOT a coenzyme necessary in the function of pyruvate
dehydrogenase complex?
a. thiamine pyrophosphate (TPP)
b. FAD
c. lipoic acid
d. NAD+
e. ubiquinone - e. ubiquinone
Entry to the citric acid cycle involves the generation of acetyl CoA. The enzyme that
catalyzes the production of acetyl CoA is . This enzyme is negatively regulated by
in a high-energy charge situation. - pyruvate dehydrogenase; NADH
Pyruvate dehydrogenase complex falls within which size range? - 4—10 million daltons
The formation of acetyl CoA from pyruvate is an irreversible step in animals, and thus
they are unable to convert into . - acetyl CoA; glucose
Which of the following lists the steps in the conversion of pyruvate into acetyl CoA by
pyruvate dehydrogenase complex in the CORRECT order? - decarboxylation; oxidation;
transfer reaction
Beriberi patients have higher blood levels of which compound(s)? - pyruvate
If pyruvate is labeled with 14C at the central carbon, which of the following molecules
will NOT contain 14C during/after the conversion of the pyruvate to acetyl CoA
catalyzed by pyruvate dehydrogenase complex? - CO2
The mechanism of inhibition of dihydrolipoyl dehydrogenase by arsenite involves: - both
the release of two water molecules and an oxidation reaction
Negative regulation of citric acid cycle enzymes in a muscle cell would lead to
and - a reduction in the rate of glycolysis; lower ATP production
Assume that in a cell the ratio listed is high. Which ratio(s) would lead to a decrease in
the rate of entrance of acetyl CoA into the citric acid cycle? - NADH/NAD+
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller shiifridoc. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
