Question

Question 1 1 pts Why is it important for DNA to have complementary base pairing? O Complementary base pairing allows base pairs to be packed in the most energetically favorable arrangement inside of the double helix structure. O Complementary base pairing will pair a purine with a purine, which are a similar width, thus they are able to hold the sugar-phosphate backbone an equal distance apart along the DNA molecule o Complementary base pairing is only important for maintaining the double helical structure of DNA and plays minor roles in copying and repairing the DNA Due to complementary base pairing, the two strands of DNA run parallel to one another, thus making the replication process more energetically favorable during DNA replication O Complementary base pairing allows the two parallel strands of DNA to twist, thus forming the helical structure of DNA Question 2 1 pts What about the structure of DNA is true? O All of the above O Protein components of the DNA function to package and control the long DNA molecule O The way in which the nucleotide subunits are linked together gives DNA strands chemical polarity O The 3' end DNA contains the hydroxyl group while the 5 end contains the phosphate group O The two polynucleotide chains are held together by hydrogen-boding between the bases on the different strands

Answer 1

1. Due to complementary base pairing two strands of DNA run parallel to one another, thus making the replication process more energetically favorable during DNA replication, that why it is important   for DNA   to have complementary base pairing.
2. All of the above is true regarding DNA structure.( DNA packed in to Histons proteins, 5’ and 3’ ends of DNA gives it polarity, OH- group is present at 3’ end and P group at 5’ end, two stands are held together by Hydrogen bond)
3. All of the following are subunit of histone octamer( histon octamer is set of histon protein which include H2A,H2B,H3 and H4 which gives stability and packed DNA molecule.

Heterochromatin is the most highly condensed form of interphase is true regarding heterochromatin ( it is inactive part of DNA)