Samples were taken from multiple skin locations and grouped based on a single shared environmental characteristic.  Based on the microbiota present in the samples identify the general skin characteristic for each environment.  Note, you do NOT need to provide specific locations (like scalpel, forearm, etc.). Environment 1: Environment 2: Environment 3:

BCH4024 OC Sp26 E1 Q22: Levinthal’s paradox highlights a fundamental issue in protein folding kinetics. If a protein sampled all possible conformations randomly, folding would take longer than the age of the universe. Yet proteins fold on biologically relevant timescales. Which concept best resolves this paradox?

BCH4024 OC Sp26 E1 Q33: In the following reaction step of the proteolytic cleavage of a polypeptide by chymotrypsin, which statement is TRUE?

BCH4024 OC Sp26 E1 Q40: What type of inhibition is represented by the following Lineweaver–Burk plot?

BCH4024 OC Sp26 E1 Q42: A substrate that enhances its own binding by inducing a conformational change in a regulatory enzyme is described as a homotropic modulator. Which kinetic behavior would BEST support this mechanism, experimentally?

BCH4024 OC Sp26 E1 Q35: A mutation that prevents the conformational changes of hexokinase significantly reduces catalytic efficiency without altering substrate binding affinity. Which mechanistic feature is most likely disrupted?

The dog Argos represents the virtue of …

BCH4024 OC Sp26 E1 Q18: A fibrous protein exhibits high tensile strength and insolubility in water. Structural analysis reveals right-handed α helices forming left-handed supercoiled structures stabilized by disulfide bonds between cysteine residues. Which protein best fits this description?

BCH4024 OC Sp26 E1 Q46: A sugar alcohol reacts with an aldehyde group on the same molecule to form a cyclic structure that is stable in aqueous solution. What is the chemical nature of the linkage formed in this first cyclization step?

BCH4024 OC Sp26 E1 Q49: A membrane lipid extracted from neural tissue contains a glucose and a fructose sugar residue, no phosphate group, and an amide linkage. Based on this information, the lipid is most likely classified as which of the following membrane lipids?