Exam (elaborations)
Biochemistry ACS Exam B Questions and Answers Fully Solved
- Course
- Institution
Biochemistry ACS Exam B
[Show more]
Content preview
Biochemistry ACS Exam BGlycolysis - answer Near-universal pathway in which glucose molecule is oxidized to
two molecules of pyruvate, with energy conserved as ATP and NADH
Glycolytic breakdown - answer Glucose is the sole source of metabolic energy in some
mammalian tissues and cell types
Fermentation - answer general form for the anaerobic degradation of glucose or other
organic nutrients to obtain energy, conserved as ATP
Preparatory phase - answerATP is invested to convert glucose to fructose 1,6-
bisphosphate.
C3 & C4 broken to yield two molecules of triose phosphate.
Glycolysis: Preparatory phase - answer1. Glucose phosphorylated at OH on C-6, ATP
used
*hexokinase*
2. glucose 6-phosphate thus formed is converted to fructose 6-phosphate.
*phosphohexose isomerase*
3. Fructose 6-phosphate is phorylated at C-1 to yield Fructose
1,6-bisphosphate, ATP used
*PFK-1*
4. Fructose 6-phosphate splits to 2 three carbon molecules, DHAP and GAP
*aldolase*
5. DHAP isomerize to GAP
*triose phosphate isomerase*
(2 GAP molecules)
Glycolysis: Payoff phase-basic def. - answerThe energy of ATP is invested, raising the
free-energy content of the intermediates, and the carbon chains of all the metabolized
hexoses are converted to a common GAP (glyceraldehyde 3-phosphate)
Yields 2 ATP and NADH per triose phosphate oxidized.
Glycolysis: Payoff phase - answer6. GAP is oxidized and phosphorylated by inorganic
phosphate (not by ATP) to form 1,3-bisphosphoglycerate
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 julianah420. 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.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now