If amounts of bases in a DNA molecule are measured, we find OT = A and C = G. OA = C and G = T. %3D OA = G and C = T. %3D that all bases are equal in amount. no two bases would be equal in amount.
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- Four nucleic-acid samples are analyzed to determine the percentages of nucleotides they contain. Survey the data in the table below to determine which samples are DNA and which are RNA, and specify whether each sample is double-stranded or single-stranded. Justify each answer (DNA and RNA can be both single and double-stranded). A G T U C Sample 1 23% 27% 23% 0 27% Sample 2 35% 35% 0 15% 15% Sample 3 17% 33% 0 17% 33% Sample 4 30% 30% 20% 0 20% Sample A is Sample B is Sample C is Sample D isWhich of the following describes the DNA molecule? A DNA molecule is single-stranded and is composed of phosphate and two nitrogenous bases (thymine and cytosine) that follow complementary base pairing rules T-C. A DNA molecule is double-stranded and is composed of sugar, phosphate, and four nitrogenous bases (adenine, thymine, cytosine, guanine) that follow complementary base pairing rules A-T and C-G. A DNA molecule is single-stranded and is composed of sugar and four nitrogenous bases (adenine, thymine, cytosine, guanine) that follow complementary base pairing rules A-G and C-T. A DNA molecule is double-stranded and is composed of sugar and two nitrogenous bases (adenine, and guanine) that follow complementary base pairing rules A-G.Which of the following combinations are true of the nucleotide composition of a sample of DNA? SELECT ALL ANSWERS THAT APPLY* C = A and G = T A +T = G+ C AxC = G x T A=T and C = G A-T= G-C A+C = G+ T DNA is made up of deoxyribose sugar, phosphate group and a nitrogen base. DNA is the genetic material that determines the traits of living things and is O O O
- 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 conformationNucleic acids such as DNA are polymers of nucleotides. Each nucleotide consists of a five-carbon sugar bonded to a nitrogen base and a phosphate molecule. Each carbon on the sugar is numbered with primes according to chemical convention. Which carbon on the deoxyribose sugar is the nitrogen base bonded to AND how many hydrogen bonds are between nitrogenous bases in a double-stranded DNA molecule? Carbon Number Bonded to of Nitrogei the Hydrogen Bases Nitrogenous Bonds Base 2' 2 C and G Carbon Number Bonded to of Nitrogei the Hydrogen Bases Nitrogenous Bonds Base 1' 3 A and T Carbon Number Bonded to of Nitrogei the Hydrogen Bases Nitrogenous Bonds Base 2' 2 A and T Carbon Number Bonded to of Nitroger the Hydrogen Bases Nitrogenous Bonds Base 1' Cand GSelect the options that describe the correct pairings of the nitrogen bases in the DNA molecule. SELECT ALL THAT APPLY Select all that apply: A = T T = G C = A G = C A = G C = T
- If the GC content of a DNA molecule is 48%, what are the percentages of the 4 bases A, T, C, and G- in this molecule? O A= 24%, C = 26%, G = 26%, T = 24% O A= 24%, C = 24%, G = 26%, T = 26% O A = 26%, C = 24%, G = 24%, T = 26% O A= 52%, C = 48%, G = 48%, T = 52% O A= 52%, C = 48%, G = 52%, T = 48%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 = % % %Which of the following statements is true for double-stranded DNA? All of the given choices are true. The amount of A is the same as the amount of T, and the amount of G is the same as the amount of C. O The amount of A is the same as the amount of G, and the amount of T is the same as the amount of C. The amount of A is the same as the amount of C, and the amount of G is the same as the amount of T.
