The following amino acid is dissolved in solution at pH 7.4.HCH'+ CHCH₂H/H+HCa. Which amino acid is this? (all lower case)N-HCHCH₂b. What is the pKa of its ionizable side chain? (Use the value from the textbook.)c. What is the ratio of the uncharged to the charged form at pH 7.4? (write answer asnumber with one decimal place, ex 2.5 or 0.2 or 50.0 with an implicit "to 1")

Dissociation of a weak acid is mathematically described by the Henderson-Hasselbalch equation:pH =…

Answered: The following amino acid is dissolved…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

Which of the twenty naturally occurring amino acid side chains are charged at a pan of 1.00? pH of 7.00? pH of 12.00? Make a table.
Phosphate buffers are commonly used to mimic biological systems. Given that phosophoric acid is a triprotic acid with three pKas (2.12, 7.21, and 12.32), why do you think this is? What are the dominant buffering compounds present in a phosphate buffer near physiological pH?
Identify the following types of biomolecules and label and identify all of the functional groups.
What is the predominant ionic form of ribose-5-phosphate at physiological pH? Would ribose-5-phosphate be a good biological buffer for cells?
What average positive charge of an amino acid side chain with pKa 10.9 at a pH value of 11.9? Answer up to two decimals. (Please type answer no write by hend)
1.0.1 mL of a protein solution of concentration of 11 mg/mL was diluted to a total volume of 4.0 mL with water (i.e. 0.1 mL of the solution was added to 3.9 mL of water). 2 mL of this solution was then mixed with 18 mL of water. What is the concentration of the diluted protein solution? Space to show your workings:
a. what general category would you place this molecule in of the four categories of biomolecules? b. List 5 functional groups you see in this molecule?
Here is still another lipid-related question. a. Draw the structure of a soap molecule, derived from a myristic acid triglyceride. No sticks. You CAN bunch the CH2 groups together. b. Write the COMPLETE AND BALANCED reaction for your soap reacting with hard water containing Fe*. NO STICKS! c. Describe what you would see if you used a detergent (rather than a soap) in the presence of Fe*. The more detail you give, the more points you will earn. No reactions are needed here.
The amino acid glycine is often used as an ingredient in buffers for biochemistry experiments. The amino group of glycine has a pKa of 9.6. Glycine exists in either a protonated form (-NH3+) or a free base (-NH₂). a) In what pH range can glycine be used as an effective buffer? b) In a 0.1M solution of glycine at pH 9.0, what fraction has its amino group in the protonated form? c) When 99% of the glycine is in the protonated from, what is the numerical relation between the pH of the solution and the pKa of the amino group?
A student is attempting to add asparagine to a methionine that is connected to a solid polystyrene bead. They mix together the two components below with DCC, and some of the indicated product is generated. However, more happens in this mixture, resulting in multiple products. What reactivity is happening, and how can it be avoided (to give the indicated product in high yield)?
The amino acid arginine ionizes according to the following scheme: (a) Calculate the isoelectric point of arginine. You can neglect contributions from form I. Why? (b) Calculate the average charge on arginine when pH = 9.20. (c) Is the value of average charge you calculated in part b reasonable, given the pI you calculated in part a? Explain your answer
Identify the following types of biomolecules and label and identify the functional groups

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