Essential Cell Biology
Essential Cell Biology
4th Edition
ISBN: 9780815344544
Author: Keith Roberts, Karen Hopkin, Alexander D Johnson, Martin Raff, Dennis Bray, Bruce Alberts, Julian Lewis, Peter Walter
Publisher: TAYLOR
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Chapter 5, Problem 2Q
Summary Introduction

To calculate: The volume of the nucleus occupied by histone octamers.

Introduction: Cell is the basic unit of life. It contains a nucleus that has genetic material DNA. The monomers that make up the DNA are nucleotides. There are four different nucleotides. These are adenine (A), thymine (T), cytosine (C), and guanine (G). The nucleotides are covalently joined together in a sequence through the sugars and phosphates. This forms a backbone of alternating sugar-phosphate-sugar-phosphate. The histone protein helps in chromosome packing into nucleosome. An individual nucleosome core particle consists of a complex of eight histone proteins called histone octamers on which DNA is wrapped.

Summary Introduction

To calculate: The fraction of the total volume of the nucleus occupied by histone octamers.

Introduction: Cell is the basic unit of life. It contains a nucleus that has genetic material DNA. The monomers that make up the DNA are nucleotides. There are four different nucleotides. These are adenine (A), thymine (T), cytosine (C), and guanine (G). The nucleotides are covalently joined together in a sequence through the sugars and phosphates. This forms a backbone of alternating sugar-phosphate-sugar-phosphate.The histone protein helps in chromosome packing into nucleosome. An individual nucleosome core particle consists of a complex of eight histone proteins called histone octamers on which DNA is wrapped.

Summary Introduction

To explain: How this can be compared with the volume of the nucleus occupied by human DNA.

Introduction: Cell is the basic unit of life. It contains a nucleus that has genetic material DNA. The monomers that make up the DNA are nucleotides. There are four different nucleotides. These are adenine (A), thymine (T), cytosine (C), and guanine (G). The nucleotides are covalently joined together in a sequence through the sugars and phosphates. This forms a backbone of alternating sugar-phosphate-sugar-phosphate.The histone protein helps in chromosome packing into nucleosome. An individual nucleosome core particle consists of a complex of eight histone proteins called histone octamers on which DNA is wrapped.

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