Level 21. Base-pairing. In DNA, A bonds with T and G bonds with C through hydrogen bonds.Hydrogen bonds are weaker than chemical bonds, which allows DNA to form a double helix thatcan be "unzipped" in order to replicate or read the genetic information encoded in the sequenceof letters. Hydrogen bonds form between hydrogen and one of three other elements: oxygen,nitrogen, or fluorine. See if you can determine how A and T (and G and C) hydrogen bondtogether. Hint: A-T have two hydrogen bonds while G-C have three. Try to not google for thisone, and figure it out on your own!NH₂-N H₂NHadenineNH₂HNHcytosineHNguanineHthymineHHN`NHuracil

Hydrogen bonds are formed between a hydrogen bond donor and a hydrogen bond acceptor.Hydrogen bond…

Answered: 1. Base-pairing. In DNA, A bonds with T…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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A. Draw a detailed structure of DNA strand using the following sequence of bases 5'A -C- G 3' Show the structure of the phosphate group, pentose sugar and nitrogen containing base B. Why is DNA called the blueprint of an organism?
O a. The daughter cell will have double the amount of DNA that the parental cell had O b. The newly synthesized strand will have the complementary sequence of the parental template strand O c. Each DNA strand of the double helix will be copied Water can dissolve many substances including some big molecules such as proteins because of its property. Answer: In the formation of the polynucleotide chain, one nucleotide is connected to ... Select one: Oa. The phosphate group and the sugar O b. The sugar and nitrogenous base Oc The nitrogenous base and sugar Od The phosphate group and the nitrogenous base Oe. The sense and anti-sense strands
Q1: Name two base pairs. Q2: Why is the DNA structure referred to as a “ladder”? What part of the DNA represents the rungs of the ladder? What part represents the sides? Q3: Is the hydrogen bond that holds the base pairs together a strong or weak chemical bond?
13. Inside information. Nucleotides, when strung together, can create molecules such as DNA and RNA. Both of these polynucleotides serve as information storage sites in your body. DNA houses instructions we call genes. Genes tell the cell how to make proteins, but the cell never directly uses DNA to construct a protein-there's too much risk of damaging the DNA during protein synthesis. Instead, the cell uses RNA molecules-near-identical copies of the DNA that forms a particular gene -as a template to make a protein. 13.1. A nucleotide consists of what three parts? 13.2. Draw a general nucleotide (see figure 3.31 for help, ask Meza if you are unsure which diagram!) 13.3. What four nucleotides are found in DNA? 13.4. What special nucleotide is used as the key energy storage molecule for your body?
DNA Structure A. Draw an A-T base pair with the appropriate number of hydrogen bonds. You don’t have to include all the details such as every side-group but do depict the 3’ OH groups. B. What is meant by anti-parallel when referring to a DNA molecule? C. What are the major and minor grooves in the DNA structure and what significance do they have?
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?
Compare and contrast the structure of DNA and RNA. Be sure to describe each of the three components of a nucleotide for both DNA and RNA along with the types of bonds formed between the components. In addition, explain: how the nucleotides link together to form each molecule, why the prime ends are labeled 5’ and 3’, what antiparallel is, what phospodiester linkages are and what complementary base pairing is.
TACAGAGATAACCGAATT A. Write the corresponding strand that would form the other half of the DNA molecule
Drawing of DNA Structure Next, draw the structure of your double-stranded DNA molecule with circles representing the beads you used. Label each circle with the color bead: W for white, R for red, Y for yellow, O for orange, B for blue, and G for green. Also include the hydrogen bond barbells. a. Draw your double-stranded DNA structure here:
a. How many different DNA strands composed of100 nucleotides could possibly exist?b. How many different proteins composed of100 amino acids could possibly exist?
a.Write out the complementary strand to the following sequence. Begin with the 5' of the end of the complementary strand. 3 ' AGCAGTGACA5' b. Which of the following statements about DNA structure is correct? *The phosphodiester backbone of DNA is composed of covalent bonds between nudeotides * Two DNA strands in a double helix have their 5ends next to each other * Hydrogen bonds connect phosphate and hydroxyl groups on neighbouring nucleotides * The 5hydroxyl group on one nucleotide is linked to the 3 phosphate on its neighbor * In a double helix, purines pair with purines, and pyrimidines with pyrimidines C). Topoisomerases are enzymes that : * Create nucleosomes *Break phosphodiester bonds between DNA nucleotides * Synthesize a new strand of DNA from a single-stranded DNA template *Break hydrogen bonds between DNA nucleotides *Remove proteins from DNA
Activity 4. Study the structure of DNA and answer the questions below. Sugar-Phosphate Backbones Nucleotide Key: O Adenine O Thymine I Guanine I Cytosine Hydrogen Bonds Antiparallel DNA Strands DNA Ladder Double Helix Fig. 9.DNA Structure. Retrieved June 19, 2020 from https://ib.bioninja.com.au/standard-level/topic-2-molecular- biology/26-structure-of-dna-and-rna/dna-structure.html 1. What are the common parts of the nucleotide? 2. Name the different kinds of nitrogenous bases found in the DNA molecule. 3. In DNA what is the paring arrangement of the bases?

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