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1 May 2018

Most procedures that measure the quantity of a protein in solution are based on what principle?

A. Binding of hydrogen bonds to the backbone carbonyl oxygens.

B.Binding of copper to the backbone nitrogens in a protein..

C.Th. absorbanice of tyrosine residues in the protein.

D.The absorbarrce of tryptophan residues in the protein.

E.Both B and D

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Bunny Greenfelder
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1 May 2018

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Related questions

The sequence of amino acids is considered to be the ________ structure of a protein.

Select one:

a. secondary

b. tertiary

c. quaternary

d. primary

The pattern the backbone folds, for example alpha-helix or beta pleated sheet, is the ________ structure of a protein.

Select one:

a. quaternary

b. secondary

c. tertiary

d. primary

Which type of forces stabilizes the primary structure of a protein?

Select one:

a. Salt bridges

b. Hydrogen bonding between the carbonyl group and amino group

c. Dipole-dipole

d. Peptide bonds

The interaction of the side chains on the amino acids, for example hydrophobic attractions, is the ________ structure of a protein.

Select one:

a. quaternary

b. secondary

c. tertiary

d. primary

1.) Protein kinases are involved in

A) the digestion of drugs to potentially toxic byproducts.

B) the degradation of enzymes to the component amino acids.

C) the phosphorylation of a wide variety of proteins.

D) the metabolism of drugs to water soluble compounds.

E) the cleavage of peptide bonds.

2.) Which of the following is triggered by the binding of glucose-6-phosphate to glycogen phosphorylase?

A) The protein changes from its T form to its R form.

B) The protein changes from its R form to its T form.

C) The protein becomes dephosphorylated.

D) It catalyzes the addition of a phosphate group to AMP.

E) It catalyzes the addition of a phosphate group to Ser-14.

3.) Which of the following amino acid residues are often involved in acid-base in enzyme-catalyzed reactions?

A) Histidine, aspartate, serine, and cysteine

B) Serine, tyrosine, arginine, and cysteine

C) Glutamine, asparagine, lysine, and tyrosine

D) Histidine, aspartate, lysine, and serine

E) Histidine, aspartate, glutamate, arginine, and lysine

If a polypeptide gets smaller, which bond/ force/ interaction was most likely broken?

Van der Waals interaction.
Ionic bond (electrostatic interaction).
Hydrogen bond.

Peptide bond.

Peptide bonds are covalent bonds. In module 1, what did you learn was required to make and break covalent bonds in biology?

Tertiary structure
pH
Enzymes
Charged R-groups.

In a soluble protein in the cytosol, where are clusters of hydrophobic amino acid residues found?

Folded inside the protein.
Exposed on the surface of the protein.

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