BCH4024 060925 OC Su25 E1 Q48: Fatty acids (FAs) and Triacylglycerols (TAGs) are classes of lipids that play an important role in energy storage in eukaryotic organisms. The hydrocarbon chain in the tail region of both FA and TAG can be saturated or unsaturated. The degree of saturation will determine their melting point. Which statement about TAG and FA is correct?

BCH4024 060925 OC Su25 E1 Q29: Different co-factors or prosthetic groups can interact with an enzyme in order to regulate its activity. Apoenzymes differ from holoenzymes in that apoenzymes:

BCH4024 060925 OC Su25 E1 Q8: Histidine is a unique amino acid that has several functions in mammalian cells. The properties of His are associated with its pI under physiological conditions. Indicate the location of the nitrogen on the side chain of Histidine. Also calculate the pI of Histidine given the following pKa values.

BCH4024 060925 OC Su25 E1 Q36: Enolase catalyzes the conversion of 2-phosphoglycerate to phosphoenolpyruvate using metal-ion catalysis. What statement best describes the role of the Mg2+ in this reaction?

BCH4024 060925 OC Su25 E1 Q27: The mechanism utilized by the enzyme enolase is metal-ion catalysis. Which pair of statements best describes the role of metal ions in enzyme catalysis?

BCH4024 060925 OC Su25 E1 Q15:

Consider the following graph. Find the degree of the vertices  and . Find a walk of length 4 that begins at vertex  and \newline ends at vertex . (Write your final answers here, and make sure to include your work in your File Upload to receive full credit.)

BCH4024 060925 OC Su25 E1 Q18: Proteostasis refers to the cellular processes and networks that regulate the levels, structure, and function of proteins within an organism. Proteins that are expressed will go through a cycle of either folding or degradation (if not properly folded). Which of the following best explains why hydrogen bonding is not considered a major driving force in protein folding?

BCH4024 060925 OC Su25 E1 Q31: A researcher attempts to compare the Kcat/Km of three different enzymes (A-C), in order to determine the catalytic efficiency of the enzymes in the presence of multiple different substrates. Determine the Kcat/Km of enzyme A catalyzed reaction given the following information.  Vmax=1.2mMs-1 V0 = 0.9mMs-1 =30mM t=4nM

BCH4024 060925 OC Su25 E1 Q36: Enolase catalyzes the conversion of 2-phosphoglycerate to phosphoenolpyruvate using metal-ion catalysis. What statement best describes the role of the Mg2+ in this reaction?