Which of the following correctly describes the primary and tertiary structures of a protein?
A. The primary structure is the amino acid chain; the tertiary
structure is the protein's shape.
B. The primary structure is the amino acid chain; the tertiary
structure is the mRNA sequence.
C. The primary structure is the mRNA sequence; the tertiary structure
is the amino acid chain.
D. The primary structure is the protein's shape; the tertiary structure
is the amino acid chain.

Which of these best describes an ionic bond?

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.