Online Quiz #4

Online Quiz #4 - Online Quiz #4 1. In the Watson-Crick...

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Online Quiz #4 1. In the Watson-Crick model for the DNA double helix (B form. the A–T and G–C base pairs share which one of the following properties? A) The plane of neither base pair is perpendicular to the axis of the helix. B) The number of hydrogen bonds formed between the two bases of the base pair is the same. C) The proton-binding groups in both base pairs are in their charged or ionized form. D) The distance between the two glycosidic (base-sugar. bonds is the same in both base pairs, within a few tenths of an angstrom. E) The molecular weights of the two base pairs are identical. 2. Which of the following is/are not part of both DNA and RNA A) a 2'OH B) Cytosine C) Adenine D) Uracil E) Guanine 3. The stability of the DNA helix is mainly due to: A) hydrogen bonding between phosphate groups. B) stacking and hydrophobic interactions. C) attractive ionic interactions. D) A and B E) B and C 4. Which DNA duplex is the widest? A) A
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This note was uploaded on 12/02/2010 for the course CHEM 233 taught by Professor Daub during the Fall '09 term at Waterloo.

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Online Quiz #4 - Online Quiz #4 1. In the Watson-Crick...

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