Question

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Question 9 0.5 pts The main enzyme involved in linking individual nucleotides into DNA molecules is Ribose DNA protease DNA polymerase Carbohydrase Question 10 0.5 pts The two polynucleotide chains in DNA are antiparallel semiconservative discontinuous parallel semidiscontinuous

Answer 1

Q9)Answer : DNA Polymerase( option c)

Rationale:

Ribose is a sugar component of RNA molecule.Protease involved in cleaving of protein contaminants from DNA.Carbohydrase enzyme plays important role in breaking down complex sugar and fibers into simple forms.

DNA polymerases are the most important enzymes in molecular biology field,they mainly involved in synthesis the DNA molecules from deoxyribonucleotides by paring or linking the specific combination of nucleotides(A-T; G-C).It helps in DNA replication process,it generally adds nucleotides to 3' end and the direction of elongation of new strand will be from 5' to 3'.

Q10) Answer : anti parallel (option A)

Rationale:

DNA is a polymer which is made up of polynucleotides (ATGC).They have a double helix structure.

Those two polydeoxyribonucleotide chains twisted around each other,and they are antiparallel .

Usually one strand runs in 5'-3' direction and the other strand runs in 3'-5' direction. Thus they are run antiparallel and complementary to each other.

Hope this helps you to resolve your doubts:)