What is the TOTAL NET CHARGE of a free arginine amino acid at pH = 12.5?

Q: What does the amino acid Alanine look like at PH =2 and PH=9?

A: Alanine:  Alanine is a non-polar amino acid that belongs to Group I. The R group of these amino…

Q: Draw the tetrapeptide WERP at pH 7.2, with the C-terminal peptide bond in the cis conformation

A: Biomolecules are organic molecules made up of mainly carbon and hydrogen but there are other…

Q: Alanine has a strong tendency to form α-helix. A biochemist synthesized a polypeptide consisting of…

A:

Q: At pH-4, what is the net charge of the peptide GKPAD? O+0.5 O-1.0 Oo -0.5

A: The sequence of the given peptide is as follows: Gly-Lys-Pro-Ala-Asp The amino acids are composed of…

Q: Calculate the fraction of Arginine that has its side chain deprotonated at pH 7.5.

A: Arginine is an amino acid that has a basic nature of side chain. Its pKa (negative log of…

Q: using the pKA table, determine the Isoelectric point of Arginine

A: The isoelectric point (pI) is the pH at which the net charge on amino acid is zero. Arginine is an…

Q: So which form of the arginine side chain is the ionized form? And when the side chain is ionized the…

A: Arginine is an amino acid with a side chain that contains a guanidine group. In its conjugate acid…

Q: Given a tripeptide Cys-His-Lys, Cys: Pk1 = 1.71; Pk2 = 10.78; PkR = 8.33 His: Pk1 = 1.82; Pk2 =…

A: pK refers to pH at which a particular group is exactly 50% ionized. A tripeptide is a peptide…

Q: What would you predict about the ratio of hydrophilic to hydro- phobic amino acid residues in a…

A: Before getting into the calculations, we have to assume that our globular protein have a spherical…

Q: Suppose you have a peptide composed of 4 amino acids bonded together: alanine, arginine, asparagine,…

A: Amino acids are the type of biomolecules that form polymers by combining through a peptide bond. The…

Q: A protein contains three 60-kD polypeptides and six 20-kD polypeptides. Each 60-kD chain is…

A: Electrophoresis means migration of charged particles under the influence of an electric…

Q: 1: QAMGRAGDLKYLGLHSV Peptide 2: ALMALFMVMALVLVSVLFIA Peptide 3: MVEDLLKQIARYLISE (a) Circle all of…

A: We are authorized to provide three sub parts at a time; since you have not mentioned which part, we…

Q: What is the optimum pH to separate a mixture of lysine, arginine, and cysteine using…

A: Amino acid is a organic molecule made up of amino group (NH2 - basic), carboxyl group (COOH -…

Q: Peptides     and     small     proteins     fold     spontaneously     in     aqueous     solution…

A: Introduction :  Entropy is the measure of randomness of any system. Similarly here we are taking…

Q: A spheroidal bacterium with a diameter of 1.0 mm (micrometer, 1 mm = 10-6) contains 25,000 molecules…

A: A spheroidal bacterium are circular or oval in shape which are generally known as coccus (plural…

Q: Do you predict that this salt bridge will become stronger, become weaker, or be unaffected as pH…

A: Salt bridges are attractive interactions between two oppositely charged groups. So, more oppositely…

Q: What is the principal form of arginine at pH 8.0? Approximately what fraction is in this form?

A: Arginine is a basic amino acid which contains an alpha amino group, an alpha carboxylic group and a…

Q: A fragment of a protein commonly found in food was sequenced and found to have the sequence: RDCEHKY…

A: The four types of biological macromolecules are proteins, nucleic acids, lipids and carbohydrates.…

Q: Consider a protein in which a negatively charged glutamic acid side chain (pKa = 4.2) makes a salt…

A: Salt bridges are attractive interactions between two oppositely charged groups. So, more oppositely…

Q: A tetrameric protein dissociates into dimers when the detergent sodium dodecyl sulfate (SDS) is…

A: Proteins are polymers of amino acids linked by peptide bonds. Proteins can be single chain or more…

Q: You are given 0.5 M solution of the amino acid Arginine. pK1 (α-carboxyl group) = 2.17 pK2 (α- amino…

A: In biochemistry, pH can be referred as the decimal logarithmic value of the reciprocal of H+…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.