#1 Structure "B" in the diagram above is... Select one: COA a sugar group (deoxyricose) OB. a nitrogenous base OC. a phosphate group OD. a nucleotide * * Use the following to answer the next question. A Simplified Diagram of DNA A B Note that the shapes used to represent each molecule in this sample of DNA do NOT follow the accepted convention.

#1 Structure "B" in the diagram above is... Select one: COA a sugar group (deoxyricose) OB. a nitrogenous base OC. a phosphate group OD. a nucleotide * * Use the following to answer the next question. A Simplified Diagram of DNA A B Note that the shapes used to represent each molecule in this sample of DNA do NOT follow the accepted convention.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna

Section: Chapter Questions

Problem 16QP: A beginning genetics student is attempting to complete an assignment to draw a base pair from a DNA...

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A beginning genetics student is attempting to complete an assignment to draw a base pair from a DNA molecule. The drawing is incomplete, and the student does not know how to finish. He asks for your advice. The assignment sheet shows that the drawing is to contain three hydrogen bonds, a purine, and a pyrimidine. From your knowledge of the pairing rules and the number of hydrogen bonds in A/T and G/C base pairs, what base pair do you help the student draw?
Using Figures 8.7 and 8.9 as a guide, draw a dinucleotide composed of C and A. Next to this, draw the complementary dinucleotide in an antiparallel fashion. Connect the dinucleotides with the appropriate hydrogen bonds. FIGURE 8.9 The two polynucleotide chains in DNA run in opposite directions. The left strand runs 5 to 3, and the right strand runs 3 to 5. The base sequences in each strand are complementary. An A in one strand pairs with a T in the other strand, and a C in one strand is paired with a G in the opposite strand. FIGURE 8.7 Nucleotides can be joined together to form chains caled polynucleotides. Polynucleotides are polar molecules with a 5 end (at the phosphate group) and a 3 end (at the sugar group). An RNA polynucleotide is shown at the left, and a DNA polynucleotide is shown at the right.
State the properties of the WatsonCrick model of DNA in the following categories: a. number of polynucleotide chains b. polarity (running in same direction or opposite directions) c. bases on interior or exterior of molecule d. sugar/phosphate on interior or exterior of molecule e. which bases pair with which f. right- or left-handed helix
RNA is ribonucleic acid, and DNA is deoxyribonucleic acid. What exactly is deoxygenated about DNA?
(a) (b) (c) The figure shown below is the mechanism of a DNA nuclease. The DNA molecule is in blue while the protein residues are in black (M1 and M2 are metal ions, they are irrelevant to this question). 3' Base reaction. M² 5' 00 3' Glu 357 M¹ Draw the structure of the final DNA product for this reaction. Draw a square around the nucleophile and draw a circle around the leaving group in this Does this depict the reaction of an endonuclease or an exonuclease?
Phosphate T Sugar G G A 4 Bases O CCCACTTGAG GAGTTCACCC GGGTGAACTC CTCAAGTGGG O None of the Above Suppose the DNA molecule shown at left was produced in the test tube from deoxynucleotide 5'-triphosphates. What is the correct primary sequence of this piece of DNA?
a. Write the structural formula of GAC, a portion of DNA. Write the complementary strand adjacent to it so that the complementary bases are side by side. Connect the appropriate base pairs. b. Sticking to the convention of writing the nucleotide sequence in the 5'-3' direction, what is the nucleotide sequence of the DNA strand complementary to ATGCACCATGCT?
Examine the 5'- 3 sequence of bases of the DNA molecules (A D) shown below. I am only showing you the 5 - 3' strand of each molecule, but you can imagine the complementary 3' - 5' strand for each molecule. Which double-stranded molecule is held together by 10 hydrogen bonds? O AAAT O ATAG O TGTC O GCGA
Hydrolysis of the N-glycosyl bond between deoxyribose and a purine base in DNA creates an apurinic (AP) site. An AP site is more thermodynamically destabilizing to a DNA molecule than is a mismatched base pair. Examine the structure of an AP site. HN H₂N N 0 Guanine -O-P-O-CH₂O. H₂N H HN H H H Hod H ofo -0- Guanosine residue (in DNA) -0-CH₂ H H H Apurinic residue H OH H
There is a chemically synthesized DNA oligonucleotide is 5’–AUCG–3’. Pleasedraw the all-atom structure of this RNA strand, including that of the phosphategroup, the pentose (ribose), and the base for each nucleotide. The structure is inthe 5’→3’ direction
The two strands for the helix-shaped DNA molecule are heldtogether by electrostatic forces as shown in class. Due to electron sharing, themagnitude of the net average charge on the H and N atoms, each, is 0.2e. Thenet average charge on the C and O atoms, each, is 0.4e. The distance betweenany two adjacent atoms on the same molecule is 0.1nm. Since electric fieldsdecrease as an inverse square law, they die off quickly with distance. So, theonly fields that really contribute to any given bond are due to the 3 atomsalong the red dotted line in the class diagram (two atoms on one'molecule andone atom on the other molecule).Calculate the electric fields and net force between a thymineand an adenine pair.=Calculate the electric fields and net force between a cytosineand a guanine pair.nConsider the OHN bond in the AT nucleotide. Can theelectric field be zero anywhere along the axis of this bond? If not,explain why not. If so, find where the electric field is zero.
A circular double-stranded DNA molecule contains 4200 base pairs. Insolution, the molecule is in a B-form helix, with about 10.5 base pairsper turn. The DNA circle has 12 superhelical turns. What is its superhelixdensity s?