Summary
Summary Biochemistry CHAPTER NINE: OVERVIEW OF METABOLISM
- Course
- Institution
- Book
CHAPTER NINE: OVERVIEW OF METABOLISM is the perfect summary/notes for McMurry's organic chemistry. Its all you need from chapter nine.
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
More summaries for
-
TEST BANK FOR BIOCHEMISTRY, 7TH EDITION: BY JEREMY M. BERG
-
Biochemistry Exam 2 Notes / Study Guide / Summarized
-
Complete Test Bank Biochemistry 8th Edition Berg Questions & Answers with rationales (Chapter 1-36)
Seller
Follow
rsartorius
Reviews received
Content preview
CHAPTER NINE: OVERVIEW OF METABOLISM1) Intro to Metabolism
a) biochemical steps used by cells to produce and utilize energy
b) catalyzed by dedicated enzymes and organized into a collection of metabolic
pathways
c) ex:
i) oxidation of glucose from stored glycogen or dietary carbohydrate requires 20
steps. The energy released during this step-wise oxidation process is more
easily harnessed in small parcels and converted to ATP and GTP
2) Catabolism and Anabolism General Info
a) connected by ATP production and utilization and thus are tightly integrated
b) energy released during catabolic reactions in the form of ATP and NADPH is
used to drive anabolic reactions where ATP is hydrolysed to ADP and HPO42-
and NADP+ is produced
c) may occur simultaneously since these opposing pathways are often found in
different cellular compartments
i) ex:
(1) enzymes of fatty acid synthesis are found in the cytosol whilst fatty acid
oxidation occurs within the mitochondria.
d) Separate catabolic and anabolic pathways facilitate reciprocal regulation
e) some metabolic pathways may both catabolic and anabolic
i) amphibolic pathways
(1) ex: citric acid cycle
3) Catabolism
i) Metabolic reactions that degrade dietary nutrients, complex metabolites or
stored energy reserves
ii) oxidative breakdown of large complex macromolecules into a fewer number
of smaller molecules such as lactic acid, amino acids, fatty acids, glycerol and
urea
iii) Convergent process
(1) number of products at each stage is reduced
iv) release energy in the form of ATP to:
(1) drive anabolic reactions
(2) perform mechanical work
(3) perform active transport (see figure 9.1).
v) Fuel type and cellular circumstances determine amount of ATP produced
(1) the more reduced fuel molecules provide more cellular energy upon
oxidation
vi) Three distinct stages to aerobic catabolism
(1) large macromolecules are broken down into smaller building blocks
(a) ex: Proteins are degraded into amino acids polysaccharides are
degraded to monosaccharides and then to glucose
(b) ex2: triacylglycerides are metabolized to free fatty acids and glycerol
(2) building blocks are further degraded to simple intermediates
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 rsartorius. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.87. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now