he figure shows that the average distance between base pairs measured parallel to the axis of a DNA molecule is 3.4 Å. The average molar mass of a pair of nucleotides is 650 g-mol-1. Estimate the length in cm of a DNA molecu olar mass 5.1x10° g-mol-1, D 26 v cm oughly how many base pairs are contained in this molecule? 784615 x base pairs

Consider normal B-form DNA. It forms a regular antiparallel double-helical structure with Watson-Crick base-pairing mediated through hydrogen bonding. The base pairs all stack upon one another, with 3.4 Å spacing between them. DNA strands having a complementary sequence will spontaneously form a double-helix in an aqueous solution. In terms of energy, what primarily drives helix formation? O Positive Entropy from base stacking van der Waals interactions O Hoogsteen interactions Positive Enthalpy from Hydrogen Bonding between GC and AT pairs Negative Enthalpy from Hydrogen Bonding between GC and AT pairs O Negative Entropy from base stacking

please solve this with step-by-step calculations and explanations.

please dont give hand writting solution please

draw the structure of the polynucleotide GT

The following is diagram of a generalized tetranucleotide. Carbons exist at corners on the shapes and phosphate groups are filled circles. A. Is this a DNA or an RNA Molecule? B. Where is the 3’ end of this tetranucleotide? C. Given that the DNA strand which served as a template for the synthesis of this tetranucleotide was composed of the bases 5’-ACAG-3’, where are the expected bases?

The average length of double helix in human chromosome is 3.8cm. 1. Approximately how many base pairs would be present in such a chromosome?____________(no spaces and comma) 2. If the strand of nucleotide is 200,000 bp, give the length in micrometers.__________(no spaces)

It is known    that    double    stranded    DNA    is    denatured    at    low    pH.     pKa values    should    allow    the    determination    of    whether    this    is    due    to    perturbation    of    the    hydrogen    bonding    in    A-T    and/or    G-C    base    pairs.    The    table    gives    values    for    the    pKas    of different    protonated    groups    in    the    nucleobases.Nucleobase Position    &    pKa                    A             N1,            3.5                    G             N7,            1.6;                N1,    9.2                    C             N3,        4.2                    T             N3,        9.7a)   Draw    the    A-T    and    G-C    base    pairs.                - Label    the    bases    with    the    one-letter    code.    –        - Number    the    atoms    in    the    rings and    label    the    atom    that    attaches    to    the    sugar.                - Mark the groups that interact in normal…

As2

First please note this is DNA-B and NOT DNA-A, also the marked answer was wrong so please choose another one