Be able to count how many peptide bonds there are in a figure

1. Be able to count how many peptide bonds there are in a figure.

See question "Examine the peptide shown. How many peptide bonds does it contain?"

2. Which reagent reduces disulfide bonds to sulfhydryl groups?

2-mercaptoethanol

3. Comparisons of proteins and evolution can be made by constructing _______ trees.

Polylogenetic

4. True or False: In gel filtration chromatography, molecules are separated according to their size and shape where larger molecules elute first and smaller molecules elute last.

True

5. One of the reasons the primary structure is important for a protein is that it determines the ________ the molecule adopts in aqueous solutions.

Three-dimensional shape

6. SDS-PAGE separates proteins primarily due to differences in ___________.

Mass

7. How many charged groups do all amino acid residues have at physiological pH?

Not all amino acid residues are charged.

8. The first protein sequenced, reported by Frederick Sanger, was bovine ________.

Insulin

9. Molecules that contain a(n) ________ are capable of absorbing light.

Chromophore