Using the image below which of the regions marked below with

Using the image below, which of the regions marked below with a red arrow is mediates base-pairing of DNA? Region 1 Region 2 Region 3 Regions 2 and 3 base pair Regions 1 and 2 base pair Your younger sibling is having a problem with his chemistry class. His teacher has marked his exam as incorrect and told him that he is failing the class. The job was to mark all covalent bonds with an even number and the hydrogen bonds with an odd number. This is what your sibling turned in (See below). You respond. Certainly, the teacher has a problem with chemistry, none of the bonds depicted are hydrogen bonds nor covalent. You\'ll call in the morning and straighten everything out. Clearly, the teacher has mixed up the answers. You\'ll call in the morning and straighten everything out. Hydrogen bonding only happens during pairing of nucleotides in DNA. The bonds indicated are dipole moments. You\'ll call in the morning and straighten everything out. You explain that #2 is the hydrogen bond, 1, and 3 are covalent, and ask your sibiling to study with you. None of the above.

Solution

17. Option A. Region 1.

The amine group in the ring binds with the corresponding base by a hydrogen bond.

18. Option D. You explain that#2 is the hydrogen bond, 1 and 3 are covalent, and ask your siblng to study with you.