What property/characteristics can definitely be concluded from the given composition of a DNA? A = 15% C = 52% T= 24% G = 49% The DNA is double stranded The DNA is single stranded The DNA has supercoiled structures The DNA has a high Tm The DNA has a B conformation
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A: DNA is a double helix molecule made up of sugar phosphate backbone and nitrogenous bases like…
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Q: Each single strand of DNA has a phosphate-sugar _________________ on the outside.
A: backbone
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A: Q. A sample of DNA contains 40% adenine-thymine base pairs altogether. What percentage of the DNA…
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Q: DNA ________ Depends on Differences in Length of Simple-Sequence DNAs.
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A: By the rule of complementarity, every A is bound to T and G is bound to C.
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Q: w many hydrogen bonds can be formed between Guanine and its normal ring partner in double-stranded…
A: Ans- 3 hydrogen bonds
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Q: Which of the following correctly describes the structure of DNA? strands of phosphate-nitrogen…
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Q: When DNA is heated sufficiently, the strands separate. The energy that it takes to separate the DNA…
A: Deoxyribonucleic Acid(DNA) is a double-helical structure. It has two strands that are joined by…
Q: A strand of DNA has the specific sequence ATGGCTA. What would be the sequence of a complimentary…
A:
Q: The structure of DNA requires both hydrogen bonds and phosphodiester bonds. Describe the location…
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Q: Which of the following is NOT true of the structure of DNA? a. Nitrogenous bases A and C bond…
A: There are two different genetic material such as DNA and RNA.
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Q: How many hydrogen bonds are present in a DNA double helix fragment consisting of the following…
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A: The components of DNA replication. A five-membered, oxygen-containing ribose sugar ring with three…
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- What are the base-pairing rules for DNA? a. A-G, T-C c. A-T, G-C b. A-C, T-G d. A-A, G-G, C-C, T-TExamine 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 GCGAA strand of DNA contains the base pair 5’-T-C-A-G-C-A-T-3’. Give the base sequence onthe complementary DNA strand.
- Franklin's X-ray crystallography work provided which of the following regarding the structure of DNA? (more than one answer may be correct so check all that apply) A It had a helical structure with more than one strand A complete helical turn is made after 20 bases O It replicates in a semi-conservative manner Purines are paired with pyrimidinesWhich of the following pieces of DNA is going to be easier to separate into single stranded molecules using heat (ie, have a lower melting point), which breaks hydrogen bonds? Why? 1. 5’ ATTTTCCGTAAT 3’ 3’ TAAAAGGCATTA 5’ 2. 5’ ACGGTTTACCGG 3’ 3’ TGCCAAATGGCC 5’ A) 2; it has more C-G pairs which are connected by three hydrogen bonds instead of two, so they are easier to break. B) 1; it has more A-T pairs which are connected by one hydrogen bond instead of two, so they are easier to break. C) 2; it has more C-G pairs which are connected by two hydrogen bonds instead of three, so they are easier to break. D)1; it has more A-T pairs which are connected by two hydrogen bonds instead of three, so they are easier to break.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 changes occur with a double-stranded DNA if it is heated to 95 C at neutral pH? OA Increase in the absorption of uitraviolet light at 260 nm OB. Unwinding of the helical DNA structure Oc Separation of the two DNA strands Do.Hydrolysis of the N-glycosidic bond belween the base and deoxyribose DE Breakage of the phosphodiester bonds belwean adjacent ucieotides Dr. Breakage of the hydrogen bonds between guanines and cytidines.DNA has unique properties that allow it to accurately retain genetic information, even after multiple rounds of replication. One aspect of DNA that allows it to accurately store genetic information is the base pairing from Chargaff's first rule of the four nucleotide bases. If the A content of a DNA molecule is 18%, what are the percentages of the remaining bases? T = G = C = % % %One stand of DNA reads: GACTTCAGATC Whay would the complementary strand be?
- phosphodiester bonds 8 0-P-03 H₂C 8 H₂C5 OH 0-0-0- H₂C 0-6-0 H₂C OH 2 purine **** pyrimidine T Strand X OH CH₂ 01110 CH₂ FO CH₂ 66110 CH₂ O HO-1-0Draw a three different views of DNA structure.During the synthesis of a DNA molecule, nucleotides are added sequentially to the growing DNA molecule via bonds between the previously added nucleotide and the next nucleotide. The figure below illustrates a partial strand of a DNA molecule. W, X, Y, and Z denote differ- ent chemical bonds on the DNA strand. 5' end OH 0-P-0 A W B X с o Y 0 3' end The molecular structure of a DNA strand D Z OP 0 0X CH, -0- Which of the four labeled bonds was last to form during DNA synthesis? W CH, OH