Which of the following process would you expect to be enthalpically driven? Prot

Question

Which of the following process would you expect to be enthalpically driven? Protein folding Aggregation of lipids Formation of bilayers Salt dissolving in water Movement of gas molecules Which of the following amino acids could serve as an active site base as a residue in a protein? I C L N D As part of glycogen phosphorylases enrymatic activity, a residue is post-translationally modified by the addition of a phosphate group. Which of the following residues is the most likely candidate for this modification? G S R V P For questions 4-6, refer to the following titra.fen curve that results from protease digest of a protein. How many ionic species exist for the molecule whose titration curve is shown? 1 2 3 4 5 Upon analyzing this titration curve of the fragment produced from a protein digested with proteases, what conclusions do you come to about the identity of the molecule? This titration curve is for a single amino acid This titration curve shows a pKa value that is most likely associated with the side chain of Cys This titration curve is for a tripeptide a and b b and c What is the estimated pi for the molecule whose titration curve is shown above? 2 3.5 5.75 8.5 10

Explanation / Answer

Answer : Salt (NaCl) dissoved in water strong ionic bonds are broken and ions interact with water molecules

entropy increases every time solute dissolve in a solvent.

4. Answer C : From graph three

5. Answer d : From graph 5.7

Note : Active site of enzyme is that point where substrate molecules attaches with enzyme to form enzyme substrate complex.

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