6. Using the charges you calculated above, plot the characteristics of alanine over a range of pHvalues. Connect the points by estimating what the charge should be at pH values where youlack data. It is possible to calculate the charge at any pH, but if you understand therelationships presented here you will be able to make estimates quickly and easily.+2+1.5+1 -+0.5--0.5 --1--1.5 -7.6.111314pH of solution7. Aspartic acid has a side chain bearing a carboxylic acid group; its pK, is 4. The a-amino anda-carboxylic groups have pKa values similar to those of alanine. Determine the net chargeon aspartic acid at the following pH values:pH 1pH 2pH 4pH 9pH 13Net charge of molecules2.

Ans. 7) The pKa values tells us about the strength of an acid.

7. Aspartic acid has a side chain bearing a carboxylic acid group; its pK, is 4. The a-amino and a-carboxylic groups have pK, values similar to those of alanine. Determine the net charge on aspartic acid at the following pH values: pH 1 pH 2 pH 4 pH 9 pH 13

7. Aspartic acid has a side chain bearing a carboxylic acid group; its pK, is 4. The a-amino and a-carboxylic groups have pK, values similar to those of alanine. Determine the net charge on aspartic acid at the following pH values: pH 1 pH 2 pH 4 pH 9 pH 13

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter2: The Chemical Level Of Organization

Section: Chapter Questions

Problem 35CTQ: Magnesium is an important element in the human body, especially in bones. Magnesiums atomic number...

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Concept explainers

Nucleotides

It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).

Nucleic Acids

Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.

Question

6. Using the charges you calculated above, plot the characteristics of alanine over a range of pH
values. Connect the points by estimating what the charge should be at pH values where you
lack data. It is possible to calculate the charge at any pH, but if you understand the
relationships presented here you will be able to make estimates quickly and easily.
+2
+1.5
+1 -
+0.5-
-0.5 -
-1-
-1.5 -
7.
6.
11
13
14
pH of solution
7. Aspartic acid has a side chain bearing a carboxylic acid group; its pK, is 4. The a-amino and
a-carboxylic groups have pKa values similar to those of alanine. Determine the net charge
on aspartic acid at the following pH values:
pH 1
pH 2
pH 4
pH 9
pH 13
Net charge of molecules
2.

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