Biotin (below), also known as Vitamin B7, is a very large organic compound derived primarily from meats, eggs, nuts, and certain vegetables. The pKa of biotin is 4.4. This means that biotin is/is not soluble at the pH of stomach acid (pH ~2.5) and is/is not soluble at the pH of duodenum (pH ~6.1). a   is soluble in stomach and duodenum b   is soluble in stomach but not duodenum c   is not soluble in either stomach or duodenum d   is not soluble in stomach but is soluble in duodenum

Q: Are triacylglycerols :  insoluble in water? very oxidized, contain-glycerol-fatty acids and…

A: Triacylglycerols are non-polar and hydrophobic.

Q: Using the tree structures for the following monosaccharides and comparing to that for glucose, draw…

A: Carbohydrates are polyhydroxy aldehydes or ketones. They can be classified as monosaccharides,…

Q: Consider olive oil, an oil with a high percentage of fat derived from oleic acid (otherwise known as…

A: When the two hydrogen atoms of the fatty acids which adjoin the double bond are in the same chain,…

Q: What is the net charge of the following amino acids (A, B, C, D) at pH 5.96 ? Amino acid Isoelectric…

A: Isoelectric point is pH of an amino acid at which they are in their zwitter ion form i.e, the…

Q: At which pH value does the amino group of amino acid have the best buffering capacity? 9.00 9.69…

A: The titration curve of a species give us the following information.Number of ionizing groups in the…

Q: how does the protein environment surrounding an amino acid chain affect its chemical…

A: The chemical properties of an amino acid within a protein are significantly influenced by its…

Q: Unlike many fats and oils, the cocoa butter used to make chocolate is remarkably uniform in…

A: Glycerol is trihydroxy alcohol. Fatty acids contain a single carboxyl group that is attached to a…

Q: The pH vs charge graph for a triprotic amino acid is shown below. Please answer the following…

A: An amino acid with the ability to donate 3 protons (3 H+) is called a triprotic amino acid. The 3…

Q: Cysteine is an important amino acid that stabilizes the structure of peptides and proteins by the…

A: Cysteine at neutral pH (=7) has the structure NH2-CH(CH2-SH)-COOH. We know the pka for acid is 1.092…

Q: Match each charge form of alanine under the pH conditon where it would be the predominant form. The…

A: Alanine is an α-amino acid that is needed for protein biosynthesis. It is non-essential for humans…

Q: Determine the net charge (to the nearest integer) on the following peptide at pH5 AND pH 12.…

A:

Q: The pKas of two hypothetical organic acids are given below: ACOOH ----> ACOO- + H+ (pKa = 4.15)…

A: According to Henderson and Hesselbach equation.PH = Pka + log [A-] /[ HA].So if the acid is soluble…

Q: When answering the questions below, please use the one-letter code for the amino acid, with NO…

A: Acid hydrolysis: Acid hydrolysis of any protein/polypeptide is being used to detect amino acids…

Q: (a) A solution containing these five proteins was adjusted to pH 7.0 and then applied to a…

A: Chromatography is a method of separation of specific compounds from the mixture of compounds. This…

Q: please draw anr label the 20 amino acids found in proteins as they would exist in an aqueous…

A: Amino acids are biomolecules that have an amino group and a carboxyl group linked to the same carbon…

Q: The OH group of the serine side chain (R-OH) can undergo dissociation to form R-O- and H+. However,…

A: The proteins are constituted of amino acids linked via peptide linkages.The side chains of amino…

Q: Calculate the molecular mass of palmitic (hexadecanoic) acid (a fatty acid with formula C₁6H32O2).…

A: Molecular mass is the compound which consists of different atoms.It is calculated by taking the mass…

Q: You are super jazzed because your protein is purified and at a concentration of 600 μg in 1.75 ml of…

A: In biochemistry, it’s often necessary to convert between diverse units of concentration. Here, we’re…

Q: The structure of chitosan, a polymer used to eliminate protein clumps that create wine haze in white…

A:

Q: Amino acid Cys has ionizable groups with pKa values 2.0, 8.0, and 10.0.  Determine the charge on the…

A: For cysteine Charge when pH is at 1.0? ____+ve_____        Charge when pH is at 9.0? ____-ve_____

Q: Amino acid Histidine Glycine Aspartate pka values 1.8 6.0 9.2 2.3 9.6 2.1 3.9 9.8 T.A. pl value Ivom…

A: Finding pI: pI of an amino acid can be calculated by taking the average of the pKa values  of the…

Q: Lactic Acid (shown below) is built up in the body during intense workouts as a result of glycolysis.…

A: The carboxylic acid group (COOH) of lactic acid has a pKa of 3.85. The physiological pH of our body…

Q: Many bioactive compounds are derived from amino acids. This compound, found in trace amounts in…

A: Amino acids are the molecules that join to form a protein structure. The bond formed between two…

Q: 2. 0.1 mL of a protein solution of concentration of 7 mg/mL was diluted to a total volume of 4.0 mL…

A: The c1v1 formula is a mathematical expression that is used to calculate the relationship between the…

Q: Peptide A: AFEQHSR Calculate the isoelectric point of Peptide A using the pKa values in Table 4-1 of…

A: A peptide is a short chain of amino acid residue linked via a peptide bond. Recall that: Amino acid…

Q: A liter of a TPN solution contains 500 milliliters of 50 percent dextrose solution and 500…

A: To determine the daily energy and protein intakes of a person receiving 2 liters per day of the TPN…

Q: Given the following information about amino acid tyrosine answer questions 1 & 2: A. HO pka3 10.1…

A: Since you have posted multiple questions with multiple sub parts, we will provide the solution only…

Q: Classify the fatty acid with the following structural formula in the ways indicated. a. What is the…

A: Lipids  Lipids are a group of compounds that are oily or greasy in nature. They consist of alcohol…