2. Two forms of the structure of the amino acid glycine are shown in figure 3a&3

Question

2. Two forms of the structure of the amino acid glycine are shown in figure 3a&3b. Which form would predominate in the stomach and which form would predominate in the cytoplasm of the cell? Explain
3. What are the atoms that form the hydrogen- bonding network that stabilized the Beta-sheet structure in proteins?

4. During DNA synthesis why is it necessary to separate the two strands of double stranded DNA? Compare and contrast how this is accomplished in a PCR reaction versus inside a living cell.

Explanation / Answer

1. Because xanthine important intermediates in the synthesis and degradation of the purine nucleotides. Both adenine and guanine nucleotides converge at the common intermediate xanthine.

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