At physiological pH, the 0°-methylguanine:T wobble base pair predominates. Two hydrogen bonds form between the two bases. Draw the structure of this base pair. Use bond An draw hydrogen bonds. H;C H N-H

Select all of the true statements regarding the molecule below: Thymine 5' end Adenine 3' end OH NH2 NHN Phosphate- deoxyribose backbone 0H2N H2N NH2 o. Guanine Cytosined 3' end 5' end This is RNA O This is DNA O This is a monomer O The backbone of these nucleotides is a 5-carbon sugar. This nucleic acid is found in healthy human cells. This nucleic acid is the hereditary material for coronaviruses. This type of nucleic acid is usually found as a single stranded molecule. This nucleic acid is the hereditary material for some viruses, but not the SARS-CoV- 2 virus.

Consider the protein below: HO HỘ NH CH-OH CH Identify/Name the noncovalent interaction between groups in the following locations: Σ

A Uracil B Adenine HN Cytosine Guanine 2 H₂N-C 6 3 N Which of the following nitrogenous bases is represented by this structure? 5 C C N 7 IZⓇ 8 CH