Exam 3: Proteins, Carbohydrates, and Lipids

A protein contains a section partially embedded in a cell membrane and another section that extends out into the external environment.Which statement could be true about this protein?

A(n) _______ linkage connects the fatty acid molecule to glycerol.

A peptide linkage forms between

Suppose you have a triglyceride that has a melting point of 55°C.For a particular application, you need a triglyceride with a lower melting point.To solve this problem, you could replace one of the fatty acids in the triglyceride you have on hand with a fatty acid having _______ double bonds.

Optical isomers

Refer to the table below.The biosynthesis of the amino acid serine occurs through a series of metabolic reactions.A protein that catalyzes one of the beginning steps in the series was purified from bacterial cells.The rate of the reaction catalyzed by the protein was measured under varying concentrations of serine and the results summarized in the table. The data show that serine _______ the protein, possibly by binding to the protein and causing a change in the protein's _______.