Protein structure is often evaluated using enzymes like trypsin that cut the protein at specific amino acid residues exposed on the surface. the results from this type of experiment using pah in the presence (+) or absence (−) of phenylalanine is shown below. interpret the results in terms of the effect phenylalanine has on the structure of pah.

Always use significant figure rules. remember that these rules apply to all numbers that are measurements. a car travels 6 miles north, 3 miles east, and then 2 miles south. what is the distance traveled? a.7 b.11

Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b.passive c. facilitated d.active b.passive

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?