A typical amino acid with one amino group and one carboxylic acid group, such as serine, can exist in water in several ionic forms. Suggest the forms of the amino acid at low pH and at high pH.

Q: Give the full name of the amino acid and based on the structure of the side chain is it hydrophobic…

A: Concept:  Amino acid:Amino acids are organic molecules which combine to form proteins molecule.…

Q: Draw the structure of the tetrapeptide and also draw the structure of the amino acids upon…

A: In this question, tetrapeptides,  we have to draw the structure given compound we take the different…

Q: At pH 7.4, the pH of blood plasma, do the majority of protein-derived amino acids bear a net…

A: Concept introduction: Isoelectric point (pI) is defined as pH at which the protein has no net…

Q: Explain which amino acids are acidic, which are basic, and which are neutral. Use theisoelectric…

A: Amino acids: At isoelectric point, proteins are neutral.

Q: Each ionizable group of an amino acid can exist in one of two states, charged or neutral. The…

A: Histidine has the three ionizable functional groups and we have to assign proper pKa and net charge…

Q: The amino acid alanine is a solid at room temperature and has a melting point of 315 °C, while…

A: Reason to explain the existence of solid form of alanine but liquid form of pyruvic acid at room…

Q: The concentration of an unknown protein sample was determined as 6.6 mg/ml. Calculate the…

A:

Q: Amino acids may be acidic, alkaline or neutral. How does this happen? What are essential and…

A: Amino acids consist of nitrogen, oxygen, hydrogen and carbon as well as variable side chain group.…

Q: Show the shift of the electron density and the appearance of partial charges on carbon atoms in the…

A: Given : To determine the electron density and the appearance of partial charges on carbon atoms in…

Q: When the terminal phosphate is cleaved from the adenosine triphosphate molecule, the products are…

A: ATP hydrolysis is the catabolic reaction by which chemical energy that has been stored in the high…

Q: "Lipids are biomolecules that are soluble in organic solvents andinsoluble in water"  Define this ?

A: Concept introduction: Solubility rules: It stated that like dissolved like that means polar…

Q: β‑Galactosidase (β‑gal) is a hydrolase enzyme that catalyzes the hydrolysis of β‑galactosides into…

A: The  molecular mass of β‑galactosidase is 116347.57g/mol.

Q: Which of the following amino acids have R groups that have hydrogen-bonding potential? Explain.…

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Q: Tyrosine is an amino acid. Which atoms in this molecule can form hydrogen bonds? CH,-CH NH,

A: there are many hydrogen bonds possible in the aminoacids hydrogen bond is actually a weak force of…

Q: .) Explain the observed pH of the solutions of the amino acids glutamic acid and lysine.

A: Since you have posted multiple questions as per guidelines we can answer only one per session . If…

Q: Which amino acid can form disulfide bonds?

A: Amino acids are the compounds that are build-up by the amino and carboxylic acid functional group.…

Q: Explain which amino acid/amino acids can be used as buffers at physiological pH

A: The general formula of amino acid is H2NCHRCOOH where R is any alkyl group, it contains one amino…

Q: Extracellular Intracellular Nernst potential (370C, mV) lon Concentration (mM) Concentration (mM)…

A: [Na+]outside =165 mM [Na+]inside =15 mM [K+]outside =16 mM [K+]inside = 220 mM Temperature, T = 37°C…

Q: What other factors can also affect the solubility of protein?

A: The solubility of proteins can be affected by following factors ; 1. pH of a protein : The…

Q: Explain the effect of the pH on the protonation of the functional groups present in ascorbic acid…

A: We know that the functional groups present in ascorbic acid is :  (-OH group) hydroxy group, -C=O.…

Q: how to determine which is one is organic layer and aqueous layer? Is the large part always the…

A: An easy way to find out which layer is on top is to fill the funnel with water. Wherever water goes,…

Q: Outline the size ranges among bacteria and in comparison to otherorganisms.

A: Bacteria are single cell containing and they lack membrane bounded organelles and hence categorized…

Q: Write the name of linkage joining two amino acids.

A: Given Write the name of linkage joining two amino acids

Q: Numerous acidic species are found in living systems. Write the proton transfer equilibria for the…

A: An acid is a substance that gives H+ ions in its solution whereas a basic substance gives OH- ions…

Q: what are two amino acids that could form a salt bridge with each other?

A: Salt bridge is interactions of amino acids which have charges opposite to each other where heavy…

Q: Describe the pH range of acceptable buffering behavior for the amino acids alanine, histidine,…

A: The pH range of amino acids alanine, histidine, aspartic acid, and lysine is to be described. Amino…

Q: The state of ionization of a specific amino acid is directly influenced by the pH of the surrounding…

A: The state of ionization depends upon the pH of  the medium. Lysine is a basic amino acid having two…

Q: Suggest a reason why amino acids are usually more soluble at pH extremes than they are at neural pH.

A: The substances than contain amino group,carboxylic acid group,hydrogen atom and one alkyl group on…

Q: Choose any amino acid and show, by diagrams of your own creation, how pH will modify the charge…

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Q: Would you expect alanine (an amino acid) to be more soluble in water or in hexane?

A: First we will see the structure of alanine The molecule we see above have polar functional groups…

Q: Why do proteins form precipitates under some conditions and gels under others?

A: Protein precipitation means process in which it is separated from any extra material that is mixed…

Q: 12. In some proteins, hydrogen bonding occurs between polar residues and the surrounding aqueous…

A: Since the interactions made is making proteins more soluble in water. Hence it is hydropfilic…

Q: The concentration of an unknown protein sample was determined as 1.075 mg/ml. Calculate the…

A: Number of moles of any substance can be calculated by dividing the given mass by its molar mass.…

Q: Proteins fold into complex three-dimensional shapes. The function is dependent upon the structure of…

A:

Q: a) The structures of CH;COOH and hexanoic acid, CH3(CH2)«COOH are illustrated below. Compare the…

A: Intermolecular force are the force present between the combining atom which hold them together

Q: Does the titrated amino acids appear to be acidic, basic, or neutral amino acids? Please explain…

A: Amino acid is the acid contains acid group and and the amine group . Ehen there is more than one…

Q: Why do amino acids not undergo condensation reactions to form peptide bonds in aqueous solution?…

A: There is no PH that simaltaneously has the caboxlic acid in the acid form and the amine is basic…

Q: What is the cation exchange capacity (in meq/100 g) and base saturation (in %) of a 150 g soil…

A: Answer is explained below.

Q: All amino acids have two ionizable functional groups: an a-amino group (average pK, of 9.4) and an…

A: The deprotonation of an acidic group takes place at a pH higher than the pKa value.  Hence the…

Q: For the amino acid alanine, the major species in solution at pH 7 is the zwitterionic form, which…

A: Here, we have to estimate the ratio of the concentration of the neutral amino acid species to the…

Q: Ethanol is metabolized in most people at a constant rate of about 120mg per hour per kg body weight,…

A: Metabolic Rate is the number of calories required to keep human body functioning at rest.

Q: All amino acids have two ionizable functional groups: an α‑amino group (average pKa of 9.4) and an…

A: The question is based on the concept of amino acids. we have to identify at which pH, this structure…

Q: Do you think that leucine would have the same or a different structure depending upon if it was…

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Q: at a pH value of 2, the amino and carboxyl groups in an amino acid will exist as

A:

Q: Describe three effects of pH on ionization of a weak acid or base that impact biological stability…

A: The three effects of pH on ionization of a weak acid or base that impact biological stability of a…

Q: Asparagine and glutamine residues in proteins are deamidated in an aqueous solution to yield…

A: Asparagine and glutamine residues in proteins are deamidated in an aqueous solution to yield…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.