N C N HC C GH CH N H Which base normally pairs with this structure: a. Thymine b. Adenine c. Cytosine d. Guanine

Consider the hydrogen bonding pattern of an α-helix with the following sequence: HLRTNAGCSY Asparagine’s amide hydrogen is hydrogen bonded to:       a. Serine’s side chain   b. Histidine’s backbone carbonyl oxygen   c. Cysteine’s backbone carbonyl oxygen   d. Serine’s backbone carbonyl oxygen   e. Histidine’s side chain

If an RNA sample were composed of 20% adenine, what would be the percentage of guanine?

You decide to play mad scientist and try to make an ‘RNA’ like molecule with a different Aldopentose. (remember ‘normal’ RNA uses ribose)  a. Which one would give you the best chance of making an RNA like molecule. Why would the others most definitely fail? (see image attached) b. Come up with a name for your new molecule

2. Of the two sequences, which is more likely to have helical structure. Explain. a) -Glu-Asp-Glu-Glu-Asp-Leu- b) -Glu-Leu-Asp-Arg-Val-Lys-

A tRNA has the anticodon sequence 3ʹ-G A A -5ʹ. Which amino acid is attached to it?