Section I: Proteins: Structure & Function

Section I – Proteins: Structure & Function

Select the one of the following statements that is NOT CORRECT.

A. Fermentation and glycolysis share many common biochemical features.

B. Louis Pasteur first discovered that cell-free yeast preparations could convert sugars to ethanol and carbon dioxide.

C. Organic orthophosphate (P_i) is essential for glycolysis.

D. ¹⁴C is an important tool for detecting metabolic intermediates.

E. Medicine and biochemistry provide mutual insights to one another.

Select the one of the following statements that is NOT CORRECT.

A. The vitamin derivative NAD is essential for conversion of glucose to pyruvate.

B. The term “Inborn errors of metabolism” was coined by the physician Archibald Garrod.

C. Mammalian tissue slices can incorporate inorganic ammonia into urea.

D. Realization that DNA is a double helix permitted Watson & Crick to describe the polymerase chain reaction (PCR).

E. Mutation of the genome of a “model organisms” can provide insight into biochemical processes.

Select the one of the following statements that is NOT CORRECT.

The propensity of water molecules to form hydrogen bonds with one another is the primary factor responsible for all of the following properties of water EXCEPT:

A. Its atypically high boiling point.

B. Its high heat of vaporization.

C. Its high surface tension.

D. Its ability to dissolve hydrocarbons.

E. Its expansion upon freezing.

Hydrocarbons are water insoluble.

Select the one of the following statements that is NOT CORRECT.

A. The side-chains of the amino acids cysteine and methionine absorb light at 280 nm.

B. Glycine is often present in regions where a polypeptide forms a sharp bend, reversing the direction of a polypeptide.

C. Polypeptides are named as derivatives of the C-terminal aminoacyl residue.

D. The C, N, O, and H atoms of a peptide bond are coplanar.

E. A linear pentapeptide contains four peptide bonds.

Of the protein amino acids, only phenylalanine, tyrosine, and tryptophan ...