The nucleotide composition of five DNA segments were determined. Which of these DNA segments is expected to have the highest melting temperature? O The segment with 19% A. O The segment with 24% C. O The segment with 13% G. O The segment with 32% T.
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- A DNA molecule consists of 500 nitrogenous bases, of which 150 are G bases. So, the percentage of nitrogenous base T is equal to? choose the correct answer A)20% B)30% C)40% D)60%Which statement about DNA bases is true? A. Adenine and guanine are purines. B. Thymine and adenine are pyrimidines. C. Guanine and cytosine are pyrimidines. D. Guanine and cytosine are purines. E. None are correctIf a DNA molecule has 42%G calculate the percentages of A, T, and C
- Which is not a nucleotide base in DNA? a. adenine c. glutamine e. cytosine b. guanine d. thymine f. All are in DNA.Regions of DNA that are most easliy unwound have a- greater G C content b- alternating A and G c-about half G and half C d- greater A T contentThe 3’ end of DNA molecule refers to a(n) __________ that can form a phosphodiester bond (a) OH group (b) phosphate group (c) nitrogenous base (d) enzyme (e) hydrogen
- Explain why scientists preferred proteins as the source of genetic material over DNA. A. DNA seemed too simple of a molecule compared to proteins B. Proteins are made up of combinations of 20 different amino acids compared to DNA's 4 bases. The larger number seemed more likely to account for all the variety and diversity in organisms. C. Scientists knew more about proteins than they did DNA. D. All of the answers are correct explanations.I need help with a biology question: The rules for the pairing of nitrogen bases in DNA is Group of answer choices a. A = C and G = T b. A = C and G = T c. A = G and C = T d. A = T and G = CAbout how many nucleosomes could be made from a DNA strand consisting of 1000 B-helical turns? A. 5 B. 50 C. 500 D. This is not enough DNA to make even one nucleosome. The abbreviation dGp indicates: A. 3', 5' deoxyguanylate. B. 3' deoxyguanylate. C. 5' deoxyguanylate. D. 5', 3'deoxyguanylate.
- Which of the following DNA sequences would have the highest melting temperature? CGGAGCTCC AAGTCACGT GAACCTGTC ACAATGATTLevene made which contribution to our understanding of DNA structure? a. He determined that the nucleus contains DNA. b. He determined that DNA contains four nitrogenous bases c. He determined that DNA consists of nucleotides. d. He determined that the nitrogenous bases of DNA are present in regular ratiosThe nitrogen bases in DNA are bonded to thea. phosphate b. deoxyribose c. ribose d. hydrogen