Biochemistry, The Molecular Basis of Life, 6th Edition
Biochemistry, The Molecular Basis of Life, 6th Edition
6th Edition
ISBN: 9780190259204
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 17, Problem 8RQ
Summary Introduction

To review:

The definition of the following terms:

1. Positive supercoiling

2. Negative supercoiling

3. Polyamines

4. Chromatin

5. Nucleosome

Introduction:

In most of the cases, the length of the DNA (deoxyribonucleic acid) molecule may surpass the capacity of the cellular dimensions. In such cases, the DNA needs to be compacted. This compaction is performed by means of DNA supercoiling. Moreover, certain proteins such as histones also mediate this compaction and give rise to chromatins and nucleosomes.

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9. Which one of the compounds below is the major organic product obtained from the following reaction sequence, starting with ethyl acetoacetate? 요요. 1. NaOCH2CH3 CH3CH2OH 1. NaOH, H₂O 2. H3O+ 3. A OCH2CH3 2. ethyl acetoacetate ii A 3. H3O+ OH B C D E
7. Only one of the following ketones cannot be made via an acetoacetic ester synthesis. Which one is it? Ph کہ A B C D E
2. Which one is the major organic product obtained from the following reaction sequence? HO A OH 1. NaOEt, EtOH 1. LiAlH4 EtO OEt 2. H3O+ 2. H3O+ OH B OH OH C -OH HO -OH OH D E .CO₂Et

Chapter 17 Solutions

Biochemistry, The Molecular Basis of Life, 6th Edition

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