HOOCCH2CH2CH2CH2CH2COOH malonic acid oxalic acid adipic acid pimelic acid succinic acid ○ glutaric acid

Physical and chemical similarities and differences of methyl cinnamate C10H10O2 and Aspirin (acetylsalicylic acid) C9H8O4 ?

What is CH3CH2NH3+ classifed as? Group of answer choices strong acid weak acid strong base weak base negligible salt spectator

1 Hyaluronic acid acts as a lubricant in the synovial fluid of joints. In rheumatoid arthritis, inflammation breaks hyaluronic acid down to smaller molecules. Under these conditions, what happens to the lubricating power of the synovial fluid?

A chemically modified guanidino group is present in cimetidine (Tagamet), a widely prescribed drug for the control of gastric acidity and peptic ulcers. Cimetidine reduces gastric acid secretion by inhibiting the interaction of histamine with gastric H2 receptors. In the development of this drug, a cyano group was added to the substituted guanidino group to alter its basicity. Do you expect this modified guanidino group to be more basic or less basic than the guanidino group of arginine? Explain.

18-29 Complete the equations for these acid—base reactions. (a) (b) (c) (d) (e)

What special role does the amino acid cysteine have in the peptides vasopressin and oxytocin?

21-48 List all of the functional groups that make taurocholate water-soluble.

18-17 Hexanoic (caproic) acid has a solubility in water of about 1 g/100 mL water. Which part of the molecule contributes to water solubility, and which part prevents solubility?

alanine is dissolved in a solution with a pH of 4.2. what percent of the alanine's carboxyl groups are de - protonated at this pH? What percent of the carboxyl groups are protonated?