Answered: Complete the following paragraph…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Question

Complete the following paragraph describing the fate of the second ¹⁴CO-acetyl-CoA molecule incorporated into the glyoxylate cycle.

The glyoxylate produced in the isocitrate reaction combines with a (A.) 2nd molecule of oxoaloacetate, B.) 2nd molecule of succinate, C.)2nd molecule of acetyl coa) in the malate synthase reaction. Malate is (A.Chiral, B.diasteromeoic C.)Achiral) ; therefore, the oxaloacetate produced from glyoxylate will be labeled at (A.Either of carboxylate carbon B. specifically at methylene carbon C. Specifically at carbonyl carbon D. Specifically at carboxylate carbon bonded to methylene).

Expert Solution

Step 1

Glyoxylate cycle:

This cycle involves the conversion of Acetyl CoA to Succinate for the synthesis of carbohydrates. Forming carbohydrates from fatty acids.
This cycle occurs in Plants, Prokaryotes, Bacteria, and Fungi. Absent in Animals
It is an Anabolic Pathway.
In plants, this cycle occurs in Glyoxysomes when seed germination synthesizes their carbohydrates from Triacylglycerols.