1) If the pI for a particular amino acid is 7.5, at which pH
will the net charge on the molecule be zero?
2) Calculate the pH of 0.00756 M HNO3.
3) The isoelectric point of an amino acid is defined as:
a. the pH at which it exists in the basic form
b. the pH equals the pKa
c. the pH at which it exists in the acidic form
d. the pH at which the amino acid exits in...
write then form of the acid that will exist in a pH 5.5
solution?
More basic solutions than the pKa will leave acid in its
Ch3COOH pKa 4.76
Ch3CH2NH3+ pKa 11.0
Ch3CH2OH pKa 15.9
please do each of these 3 and explain, thanks in advance
List the sequence of structures that a single amino acid
(initially in a protein molecule that you eat) goes through from
the moment it passes your lips to when it ends up in a hepatocyte.
Then explain what (if any) chemicals relevant to digestive
physiology it is exposed to at each step and what happens to the
protein and eventually protein fragments each step of the way.
1.
Which amino acid traveled the furthest up the TLC plate and which
amino acid traveled the least?
2. Why must use a pencil instead of pen to write on TLC plate?
3. What is the function of ninhydrin spray?
4. What are the amino acid present in the unknown
solution?
Consider a 0.487 L solution of the amino aspartic acid (0.685
M), which ahs a carboxylic acid group (pKa = 2.10), an amine group
(pKa = 9.82), and a carboxylic acid side chain (pKa = 3.86). How
many liters of 2.59 M NaOH would you need to add to reach the
isoelectric point of the amino acid?