Draw a diagram of the hydrogen bonding interactions in a right-handed alpha helix (show all main chain atoms).

Q: You are working at a major pharmaceutical company, and you have purified an engineered enzyme, and…

A: To determine the protein stability (ΔG in kJ/mol) using the provided equilibrium unfolding data, you…

Q: Like many fruits, apples contain not only fructose and glucose, but also sucrose, a dimer of…

A: A free energy diagram has Gibbs free energy (G) on Y-axis and Reaction coordinate on X-axis.…

Q: Find the connection among the words below and choose the letter of the word which is different. A.…

A: The agarose gel electrophoresis technique is used to separate DNA fragments. It is done according to…

Q: The amino acid shown below has an ionizable side chain with a pka of 4. When this amino acid is in a…

A: There are four types of biological macromolecules- proteins, nucleic acids, lipids and…

Q: 7. A protein has a molecular mass of 400 kDa when measured by gel filtration. When subjected to gel…

A: As we know that the sodium dodecyl (SDS) sulfate is considered as the denaturing agent, which helps…

Q: These branching differences give the polysaccharides different properties. Use the above images to…

A: Polysaccharides are polymers made up of one or more types of monosaccharides. Polysaccharides made…

Q: Consider the second titration. PH 14.0 12.0 10.0 8.0 10 11 7 4 1 9 6.0 4.0 2.0 0.0 0.5 1.0 1.5 2.0…

A: Titration is used for determining the amount of acid in a solution. Sodium hydroxide is added to a…

Q: Show the calculation for the preparation of 0.01%, 0.001%, 0.0001%, 0.00001% standard DNA solutions…

A: A liquid combination containing DNA molecules is called a DNA solution. It is frequently employed in…

Q: The ionization of p-nitrophenol is shown below (pKa = 7.0): a. Identify the weak acid and conjugate…

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

Q: Tyrosine came from the Greek word "tyros" which means cheese as it was discovered in cheese by…

A: Tyrosine is a non-essential amino acid that can be produced in the body by using phenylalanine as a…

Q: What are the chromophores detected by circular dichroism (CD) spectroscopy of a protein? peptide…

A: Circular dichromism (CD) is exhibited by molecules that have a chiral centre. The CD is a reference…

Q: Enter numerical values only as you complete the following fill-in-the blanks. The amino acid…

A: Aspartate is an acidic amino acid with R group containing COOH.It has other functional groups like…

Q: A diploid organism with a 45,000-kb haploid genome contains 21% G residues. Calculate the number of…

A: According to Chargaff's rules, DNA from each cell of any organism should contain a 1:1 ratio (base…

Q: Beta sheets shown in the figure below are: "" Parallel Not enough information One strand is parallel…

A: Here it is clearly mentioned that what its helical secondary structure.

Q: All amino acids have at least two ionizable groups: an α-amino group (average pK ₁ of 8.0) and an…

A: pKa is the pH at which a weak acid is 50% dissociated into a proton and conjugate base.At pH <…

Q: 1. What are at least 2 factors that affect rate of a reaction within a metabolic pathway? Define and…

A: A metabolic pathway is a series of biochemical reactions that occur in a sequence to convert a…

Q: A. If 200 mls of 0.02 M NaoH is added to 800 mls of 0.15 M phosphoric acid buffer at pH 8.2, what is…

A: The phosphoric acid buffer pH is at 8.2. So, it will be H2PO4- that will be acting as the weak acid…

Q: EP 1: Enzyme(E)+Substrate(S)=Enzyme-Substrate Complex (ES) FAST EP 2: Enzyme-Substrate Complex(ES)…

A: Enzyme catalyzed reaction occurs rapidly because it decreases activation energy hence causes the…

Q: It is necessary to purify the enzyme before the characterization process?

A: Amazing biological molecules called enzymes catalyze biochemical reactions in living organisms.…

Q: Question 3 of 15 What are Gram-positive bacteria? Select the correct response(s): They have a cell…

A: Gram-positive bacteria is a type of bacteria which have have a thick peptidoglycan cell wall that…

Q: Modify methionine to show its zwitterion form.

A: Here an amino acid "Methionine" is given which has following structure:-

Q: 10. In an abnormal hemoglobin variant known as Hemoglobin-Kariya, the lysine residues at position 40…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: In detail ,compare between alpha helices and beta sheets?

A: Proteins are the biomolecules that show great variation in their structural organisation. They are…

Q: A gel filtration column was calibrated by measuring elution volumes for two proteins of known mass:…

A: The established amounts of the elution volumes for the two proteins with determined masses can be…

Q: Explain why unfolding or aggrrgation may occur using changes in entropy and enthalpy of the protein…

A: Unfolding or aggregation of proteins can occur due to changes in entropy and enthalpy, which are…

Q: Identify the predominant intermolecular forces in each of the given substances. Electrostatic…

A: Ionic interaction: it can be defined as the  electrostatic interaction between oppositely charged…

Q: Which of the terms describes the thermodynamic process of converging many conformational options to…

A: The spatial arrangement of atoms in a molecule is called a conformation. Theoretically, for a given…

Q: Which of the following lists the stages of the Calvin cycle in order, starting with the stage where…

A: In the Calvin cycle, carbon atoms from CO2 are incorporated into organic molecules and used to build…

Q: A peptide has the sequence: Glu–His–Trp–Ser–Gly–Leu–Arg–Pro–Gly 1. What would be the net charge of…

A: The ionizable groups in a peptide include its N-terminal alpha-amino group, C-terminal…

Q: +40mV -70mV 2 3₂ OmV 4 ich concet Resting Potential 2 froar points to the dupy Time…

A: Electrical signals are how neurons communicate. Electrical signals are generated when there is a…

Q: Determine whether each of the examples or phrases describes an essential amino acid, a nonessential…

A: Amino acids are the building blocks of proteins, which are essential molecules in living organisms.…

Q: Energy Conversion Problem 1. a) Influence of concentration on the free energy change. In frog…

A: For the chemical reaction:aA + bB -> cC + dDThe reaction quotient Q is calculated as:Q = ([C]^c *…

Q: Asp 102 His 57 -H-N [His] [His+] pH = pK₂ + log (AA [HA] = Ser 195 `N----H-O Identify the ways that…

A: Proteases are enzymes that cleave peptide bonds that link two amino acid residues together.…

Q: The peptide KNYPEH N-terminal amino group has a pKa of 8.6 and the C-terminal carboxylate group has…

A: At pH 1, both the N-terminal amino group and the C-terminal carboxylate group will be protonated.The…

Q: A C R > N-H R O X₂ X² Ω· R ©Ð»>«< N-H C=O--HOR (N-H R R E R Type your answers in all of the blanks…

A: A hydrogen bond is a non-covalent, relatively weak, chemical bond in which a hydrogen atom…

Q: Refer to the figure shown here, and determine the value of E for the overall oxidation/reduction…

A: The reactions in which the electrons are transferred from one substance to the other substance are…

Q: How would the following enzymes speed up or slow down glycolysis? - high levels of Amp - high levels…

A: In glycolysis, a 6-carbon molecule of glucose-6-phosphate is broken down into 3-carbon pyruvate. It…

Q: Q6: The answer bank for each is: (Pick one that fits best for each) - lyase - transferase - ligase -…

A: Enzymes are biocatalysts that speed up the chemical  reactions.We have been given chemical…

Q: The hydrolysis of phosphate bonds provides the chemical energy to drive reactions in the cell. The…

A: Gibbs free energy of hydrolysis of creatine phosphate to creatine isΔG°= -43kJ/molThis implies, its…

Q: A weak acid, HA, has a pK₁ of 4.756. If a solution of this acid has a pH of 4.101, what percentage…

A: To calculate the percentage of the weak acid HA that is not ionized in a solution with a given pH,…

Q: When YO2 = 0.5, the value of pO2 is defined as _______ (see the graph in Model 1).

A: Consider the following reaction: where P is the protein, L is the ligand and k1 and k2 are rate…

Q: Concept map: construct a map of gas transport using the following terms. alveoli, arterial blood,…

A: Q.Ans:- These all terms belong to a single physiology known as Respiration.Respiration is a term…

Q: The two sides of the DNA double helix are connected by pairs of bases (adenine, thymine, cytosine,…

A: Consider 2 charges q1 and q2, the force between 2 charges is given by:Where,K is a constant (9×109…

Q: The decomposition of crystalline N₂O5 N₂O5 (s) → > 2NO₂(g) + O₂(g) is an example of a reaction that…

A: The decomposition of crystalline N2O5 N2O5(s)➡️ 2NO2(g) + 1/2 O2(g) At 25°C Standard state enthalpy…

Q: Why is the net charge 0 for cooh? Shouldn't it be +1?

A: Amino acids are biomolecules that have an amino group, a carboxyl group and a side group that is…

Q: 0 0 One strand is parallel and another is anti-parallel Parallel R Not enough information…

A: Beta sheet structure is a type of secondary structure of a protein. It has a more extended…

Q: Which of the reactions are spontaneous (favorable)? L-malate + NAD+ oxaloacetate + NADH + H+ AG =…

A: Gibbs free energy change (ΔG) is a thermodynamic quantity that represents the maximum reversible…

Q: The figure shown here is a Ramachandran plot. The plausible secondary structure that can be found in…

A: The Ramachandran plot is used to depict the statistical distribution of the combinations of the two…

Q: Determine the net charge on the following pentapeptide "Lys-Ala-His-Asp-Ser" at: a. pH 1.0 b. pH…

A: The estimated charge on the given Lys-Ala-His-Asp-Ser peptide is +3.At low pH, the amino acid is…

Q: Why does a folded mutant protein aggregate rather than remain a misfolded monomer?

A: Proteins are essential molecules in biological systems, and their proper folding is crucial for…