10 ICSE CHAPTER 2

COMPLEX OF DNA $ PROTEINS IS CALLED

• HISTONES

• GENES

• CHROMATIN

• CELL

WHAT DO YOU MEAN BY HISTONES ?

THE SHAPE OF DNA WAS FIRST STUDIED BY _________________

NAME THE FOUR NITROGENOUS BASES FOUND IN DNA ?

NO. OF NUCLEOSOMES ARE PRESENT IN A SINGLE HUMAN CHROMOSOME

• ONE

• THOUSANDS

• MILLION

• HUNDRED

POINT OF ATTACHMENT OF TWO SISTER CHROMATIDS IS CALLED ___________

THE 3 COMPONENTS OF NUCLEOTIDE ARE ______ , _______ , _______

DNA STRAND WOUND AROUND A HISTONE OCTAMER FORMS A COMPLEX CALLED

• NUCLEOSOME

• NUCLEOTIDE

• CHROMOSOME

• GENES

WHAT ARE GENES ?

CHROMOSOMES ARE HIGHLY ____________ $ ___________ CHROMATIN FIBRES