91Ó°ÊÓ

Give one of the nucleotide sequences that would translate to the peptide lys- pro-ala-phe-trp-glu-his-gly.

Teflon is an addition polymer of 1,1,2,2 -tetrafluoroethene. Write the equation for the formation of the polymer.

Poly(vinyl chloride) (PVC) is an addition polymer of vinyl chloride, \(\mathrm{CH}_{2}=\mathrm{CHCl}\). Write the equation for the formation of the polymer.

Write the structural formula of a dipeptide formed from the reaction of \(\mathrm{L}\) -alanine and \(\mathrm{L}\) -histidine. How many dipeptides are possible?

Write the structural formulas of two tripeptides formed from the reaction of \(\mathrm{L}\) -tryptophan, \(\mathrm{L}\) -glutamic acid, and \(\mathrm{L}\) -tyrosine. How many tripeptides are possible?

If adenine, thymine, guanine, and cytosine were each analyzed separately in a sample of DNA, what molar ratios of \(A: T\) and \(G: C\) would you expect to find?

If a sample of DNA isolated from a microorganism culture were analyzed and found to contain \(3.5 \mathrm{~mol}\) of cytosine nucleotides and 4.5 mol of adenosine nucleotides, what would be the amounts of guanine and thymine nucleotides in the sample?

Write a structural formula for the nucleotide adenosine-5'-monophosphate.

Write a structural formula for the nucleotide deoxyadenosine-5'-monophosphate.

How many hydrogen bonds link a guanine-cytosine base pair? an adenine-uracil base pair? Would you expect any difference in strength between guanine- -cytosine bonding and adenine-uracil bonding? Explain.