In double stranded DNA the ____ is/are found along the inside of the helix, the

Question

In double stranded DNA the ____ is/are found along the inside of the helix, the ___ is/are position along the outside of the helix. A) Sugar phosphate backbone, nucleotide bases B) Purines; pyrimidines c) nucleotide bases; sugar phosphate backbone D) pyrimidines;purines The major groove of the alpha helical structure of DNA results from which of the following: A) The spacing between the base pairs within a single turn of the helix B) The spacing between the base pairs of two adjacent turns of the helix C) The spacing between the sugar phosphate backbone of a single turn of the helix D) The spacing between the sugar phosphate backbone of two adjacent turns of the helix In a double-standard DNA, 3 hydrogen bonds form between ____ base pairs and 2 hydrogen bonds form between ____ base pairs A) A-G; C-T B) A-T;G-C C) G-c;A-T D) C-T;A-G The most Commonly observed DNA helix secondary structure under normal aqueous physiological condition is ___ while ____ is usually observed in regions of chromosomes undergoing high levels of transcription. A) B-DNA; A-DNA B) Z-DNA;B-DNA C) A-DNA;B-DNA D) B_DNA;Z-DNA In which of the following pairs of bases are both members of the pair pyrimidines? A) Uracil and cytosine B) Cytosine and adenine C) adenine and guanine D) Uracil and guanine Phosphorescent bonds are formed between the ___ group at the 5' carbon of the sugar ring of one nucleotide and the ___ groups at the 3' carbon of the sugar ring of the adjacent nucleotide. A) OH;PO_4 B) PO_4;OH C) PO_4; H D) H;OH E) PO_4;Ch_3 In the chemical structure of the ribose sugar component of DNA there is a __ at the ___ carbon; but in the chemical structure of the deoxyribose sugar component of RNA there is a ___ at this same carbon position. In Both DNA and RNA the nitrogen containing bases of RNA and DNA nucleotides are added to the ___ carbon of the pentose sugar ring. A) OH;2';H;5 B) OH;2';H;1' C) H;2';OH;1' D) H;2';OH;5' E) OH;2';3' If the sequence GAC is mutated to GTC, we describe this mutation as a ___; If the sequence GAC is mutated to GCC, We refer to it as a ___. A) transition; transition B) transversion; transversion C) Transversion; transition D) transition; tranversion E) None of the above A mutant phenotype caused by a novel mutation in one gene is restored to a wild type phenotype by a mutation in a second, different gene. The original mutation in the first gene is referred to as a ____ mutation and the mutation in the second gene is referred to as a ____ mutation A) reverse; intragenic suppressor B) reverse; intragenic suppressor C) forward; intergenic suppressor D) forward; intragenic suppressor ____ mutation only affect the individual organism in which they occur, but do not get transmitted to the next generated A) translociton B) germline C) Somatic D) transition E) none of the above

Explanation / Answer

Answer:

31. (C) Nucleotide bases, sugar phosphate backbone

32. (C) the spacing between the sugar phosphate backbone of a single turn of the helix

33. (C) G-C; A-T

34. (D) B-DNA; Z-DNA

(Since there are more than 1 questions, the first 4 questions have been answered according to the rules of Chegg)

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