Which of the following does not apply to the known model of DNA? Group of answer choices The backbone of the helix consists of sugar-phosphates units of the nucleotides. The two strands of the DNA helix are antiparallel. The two strands of the helix are held together by covalent bonds. The purines are attracted to pyrimidines

Which of the following does not apply to the known model of DNA? Group of answer choices The backbone of the helix consists of sugar-phosphates units of the nucleotides. The two strands of the DNA helix are antiparallel. The two strands of the helix are held together by covalent bonds. The purines are attracted to pyrimidines

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter6: Dna Structure And Function

Section: Chapter Questions

Problem 2SQ

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Which of the following statements regarding DNA is false? Features a beta glycosidic bond between deoxyribose and nucleobase. Phosphoester bonds in DNA are extremely stable to non-catalytic hydrolysis. In B DNA the parallel stacks of nucleobases are separated by about 3.5 A A DNA is formed from single strands of RNA and DNA DNA contains uridine, adenosine, guanosine, and cytidine as nucleobases.
Which statement most accurately describes the ‘backbone’ of DNA? Group of answer choices The DNA strand is wound up around histone groups which gives the backbone structure to the chromosome The sugar group from a nucleotide is connected to the next sugar group via a phosphate group The hydrogen bonds between nucleotides are quite strong and provide structure to DNA. Adenine and Thymine, and Guanine and Cytosine are linked together
Can you please check my answer and make sure it is correct? Question: Why are hydrogen bonds so vital to the structure of DNA? Hydrogen bonds are important for DNA because they are the bonds between the bases and help DNA form into its double-stranded shape. These bases include adenine, thymine, guanine, and cytosine. Adenine forms two hydrogen bonds with thymine and guanine forms three hydrogen bonds with cytosine. The resulting double-strands are held together by hydrogen bonds which is an important characteristic for DNA. These weak bonds are stable, but can be separated when it is necessary. This process is necessary during DNA replication, when a duplicate copy of DNA is being made or during the denaturation step in PCR.
You are studying two strands of DNA. They have exactly the same length, but the first one has a very high G + C/A + T ratio of 3.4. The second DNA strand has a more moderate G + C/A + T ratio of 2.3. Which of the two strands will have the highest binding affinity and why? options: the first strand because it contains more hydrogen bonds the second strand because it contains more hydrogen bonds the first strand because it contains fewer hydrogen bonds the second strand because it contains fewer hydrogen bonds
Which of the following is true about DNA ? * Two DNA strands are twisted around each other to form an anti-parallel double helix Adenine pairs with thymine though 2 hydrogen bonds (A=T) Guanine pairs with cytosine through 3 hydrogen bonds (GEC). O All of them
The nucleotides are very specific as to which bond together. The four nucleotides are:Adenine (A) Thymine (T)Guanine (G) Cytosine (C)They are written out in this order because Adenine always bonds with Thymine and Cytosine alwaysbonds with Guanine. Draw a line connecting those so you remember.Let’s practice making complementary strands. DNA: T-A-C-T-T-A-C-A-C-G-T-C-A-A-C-G-T-G-C-C-T-T-A-G-C-C-A-T-TDNA: A-T-GGo ahead and write out the complementary strand to the strand above continuing where we left off.
Which of the following properties applies to DNA structure? Contains A, C, G, and U base pairs Single stranded Contains the sugar deoxyribose Has an extra hydroxyl (OH) group on the 2' carbon of the sugar
Part A Make a concept map that relates DNA's primary structure to its secondary structure. Label the diagram by dragging the labels to the appropriate targets, DNA's secondary structure hydrophobic interactions phosphodiester linkages deaxyribonucleotides Pyrimidines antiparallel double helix DNA's primary structure purines complementary base pairing Submit My Answers Give Up jained by make up including two rings held together by single ring arranged in pairs make up held together by Reset Help
Some Discoveries about DNA DNA is made of deoxyribose sugar, phosphate, and four nucleotides (A, G, C, and T). DNA was originally isolated from white blood cells. X-ray diffraction of the DNA molecules shows that it is a helical structure. Adenine pairs with thymine and guanine pairs with cytosine in any sample of DNA. DNA, not proteins, carries genetic information. Match the following scientists with their discoveries listed above. Discovery: Answer Answer Answer Answer Scientist: Franklin Chargaff Levene Hershey and Chase
Which of the following statements about the DNA double helix is FALSE? O The base pairs are located in the center of the helix O The plane of the base pairs is perpendicular to the direction of the deoxyribose- phosphate backbone O The two strands have the same 5' to 3' direction (i.e, are parallel) O The base pairs stack on one another O The deoxyribose-phosphate backbone is on the outside of the helix
Which of the following are TRUE for RNA compared to DNA? Please select ALL correct answer options. Select 4 correct answer(s) Question 6 options: RNA contains the bases A, G, C, and U, whereas DNA contain the bases A, G, C, and T. RNA can catalyze biological reactions, but DNA cannot. DNA but not RNA can bind proteins RNA has ribose sugar in its nucleotides, rather than the deoxyribose found in DNA. RNA is usually single stranded and can make more complex three-dimensional molecular shapes than double-stranded DNA.
Based on your understanding of DNA structure thus far, design a synthetic nucleotide that can be integrated into a DNA molecule AND be functional. Take the following into consideration: DNA Nano measurements: width of the helix, spacing between nucleotides Use the functional groups that you’ve learned about Remember that hydrogen bonding stabilizes the DNA molecule