the dna molecules need to be packaged to be supercooled or wound up in nucleosom

Question

the dna molecules need to be packaged to be supercooled or wound up in nucleosomes 3. Which amino acids are very important in proteins (histones) that bind to DNA? A) Lys, Arg B) Glu, Asp C) Gln, Asn D) Gly, Val 4. Why is it necessary for DNA to be supercoiled or wound up in nucleosomes and other structures? The DNA molecules need to be packaged small enough to fit inside the cell nucleus 1-2 m of human DNA can fit in the nucleus of the cell which is only 5 um in diameter A) B) C) The DNA molecules are much longer than the cell itself D) All of the above

Explanation / Answer

3. The correct option is  A . Lysine and arginine are imortant proteins that bind the DNA .

4. Option D is correct . All of the points (A,B,C) are important for the compact packing of DNA . Therefore due to its supercoiled nature it fits in a cell which a diameter 5-10 microns

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