How is the negatively charged DNA held as a compact 'bead', in the Nucleosome?

Metal sol is negatively charged.

A body is negatively charged means

A body can be negatively charged by

A body can be negatively charged by

Name the negatively charged and positively charged components of a nucleosome.

In prokaryotes, the negatively charged DNA is held with some positively charged proteins in a region called as:

Go through the following statements: (i) a typical nucleosome contains 400 bp of DNA helix. (ii) The positively charged DNA is wrapped around the negatively charged histoned octamer to form a structure called nucleosome. (iii) Histones are rich in the basic amino acid residues asparagine ad valine (iv) The packaging of chromatin at higher level requires additional set of proteins that collectively are referred to as nonhistone chromosomal proteins. Find out the wrong statements:-

How much positive and negative charge is there in a cup of water ?

How much positive and negative charge is there is a water molecule ?

Two uncharged conducting spheres, A and B, are suspended from insulating threads so that they touch each other as shown in the figure. While a negatively charged rod is held near, but not touching sphere A, someone moves ball B away from A. How will the spheres be charged, if at all ?