Consider what would happen if you had a pure preparation of each of the substances below, which you added to an aqueous buffered solution (at physiological pH) and sonicated (mixed up). Which of the following would be most likely to spontaneously assemble into a micelle? H₂C HC-0 H₂C-O HO O O H₂C CH₂ H₂C-O-H 요 HC-O-C H₂N-CH₂-CH₂-O-P-0-CH₂ O=P-O CH₂ -NH3
Q: The isoelectric point of eIF4a is 5.02. Students are given a sample of cell lysate containing eIF4A…
A: Ion Exchange Chromatography (IEC) is a chromatography technique whose ability to separate analytes…
Q: yur as marking consists protein mat calowing Wi/ a 125 KD heteromer c de are of each subunt masses:…
A: The structure of the 125 kDa heterotrimeric protein given in question is depicted below.It is…
Q: What is the concept of FoldIt protein folding game, and how is it used to elucidate and visualize…
A: The Department of Biochemistry and the Center for Game Science at the University of Washington…
Q: Trypsin catalyzes the cleavage of: a) all peptide bonds b) peptide bonds after Lys or Arg c)…
A: Proteases are the enzymes that hydrolyse proteins into amino acids or peptides. They break the…
Q: Which of the following molecules is amphipathic? Select all that apply. Select all that apply A…
A: Molecules that have a polar region and non-polar region within the same molecule. The polar region…
Q: Which is the best explanation of why kinesin doesn't bind covalently to its structural protein…
A: Kinesins are motor proteins responsible for transporting cellular cargo along microtubules within…
Q: Which of the following is not a CYP450 catalyzed oxidation/reduction reaction? O A. deamination OB.…
A: The Cytochrome P450 (CYP450) enzymes are a group of enzymes that play a crucial role in the…
Q: Which type of motifs/folds are found in the protein shown below O Colled-coil O EF Hand O Horseshoe…
A: The final products of the expression, "the proteins" attain higher folding confirmation of…
Q: Below is the result of PCR products running on agarose gel electrophoresis. You expect to see one…
A: PCR enables us to increase the concentration of our gene of interest. We use two primers for PCR,…
Q: Which of the following amino acids could work as the catalytic residue in an enzyme active site?
A: The distinguishable feature of an enzyme is the active site of the enzyme. Enzyme catalysed…
Q: Why are several glycine residues found within the selectivity filter of K+ channels? a. Glycine…
A: The selectivity filter of potassium channels is the structural element directly responsible for the…
Q: What kind of catalysis is cysteine driving in this picture? H-N. Metal catalysis Covalent catalysis…
A: General Acid/Base Catalysis: Catalysis involves proton transfer from weak acid or to weak base other…
Q: Which amino acid residue is most likely to be found in position "a" or "d" of the pseudo repeat in?…
A: Proteins are the important biomolecules synthesized in biological cells as final products of gene…
Q: (a) The diagram below on the right-hand side illustrates the polar Asp(a94)... Asn (102) interaction…
A: A table summarizing the characteristics of many hemoglobin mutants affecting the 94 position is…
Q: You analyze a protein of 100 kDa using SDS-PAGE in the absence and presence of �-mercaptoethanol…
A: Multisubunit proteins are composed of more than 1 polypeptide chain.SDS (sodium dodecyl sulfate)…
Q: Why might the compound below be a potent transition state analog inhibitor for isocitrate…
A: Transition states are short-lived species that arise as a substrate is being converted to a product…
Q: The monosaccharides shown below are H но-н H- OH \\ HOH но-н но-н H-OH HO H H-OH CH₂OH Enantiomers…
A: Isomers are defined as the two or more molecules with the same molecular formula but different…
Q: During glycolysis, glucose is converted into fructose-6- phosphate in two successive reactions:…
A:
Q: Glucose oxidase [S] (glucose, mM) 0.1 5 7 8 15 20 0.2 0.4 0.5 1.0 2.0 3.0 5.0 7.5 35 45 55 60 80 90…
A: Enzymology relies on the fundamental idea of Michaelis-Menten kinetics. It covers the interactions…
Q: Can waxes undergo hydrogenation reaction, why or why not?
A: Hydrogenation reaction converts unsaturated bonds such as carbon-carbon double bond or carbon-carbon…
Q: The C-2 epimer of A is [Select] [Select] H- Н- НО Н- -H CHO OH OH Н H OH НО НО OH -H -H Н- Н- CHO B…
A: Carbohydrates are polyhydroxy aldehydes or ketones. Monosaccharides are simplest carbohydrates:…
Q: Would you expect any of the side chains in the peptide above to undergo hydrolysis? Select all that…
A: Hydrolysis is the cleavage of covalent bond by adding elements of water to it. A peptide is a short…
Q: most amount of attraction to an anion column operating at the physiological ph
A: pH (Potential of Hydrogen):It is a measure of the acidity or alkalinity of a solution.It quantifies…
Q: Crocodiles can use virtually 100% of the oxygen in its blood, whereas humans can extract only about…
A: Let's evaluate each statement to determine which one best explains why HCO3 in the crocodile works…
Q: Analyze the following pair of compounds. Which of the terms explains the relationship between the…
A:
Q: Choose a FALSE statement about Hill's plot. All or none binding is given by n = N² (N is the total…
A: Hills plot is a graphical representation used in biochemistry to analyze the cooperative binding of…
Q: Part B. Classify Fatty Acids as Saturated or Unsaturated 2. Identify each fatty acid below as…
A:
Q: The reaction coordinate diagram shown below is for the mitochondrial enzyme ATP synthase. G KJ/mol…
A: A reaction coordination graph is a graphical representation of the free energy changes that occur…
Q: 1/Vo O 2 0.2 4 3.5 0.5 2.5 0.25 2 1.5 1 0.5 What is the closet value to the Vmax? 0 0 1/[s] 2 graph…
A: The graph that is plotted by taking reciprocal values of substrate concentration and reaction…
Q: Correct each molecule in the drawing area below so that it has the structure it would have if it…
A: Name of the first given structure is 3-hydroxypropanoic acidname of the second given structure is…
Q: Estimate KM and Vmax for the uninhibited reaction from the first graph. What difficulties do you…
A: Km is the enzyme kinetic constant that determines the affinity of an enzyme to its substrate. It is…
Q: Choose the Incorrect statement. In the phospholipid bilayer part of the cell membrane. None of the…
A: The cell membrane is composed of a phospholipid bilayer that plays a crucial role in various…
Q: The full structure for the polypeptide found in wasp venom is shown. Identify the individual amino…
A:
Q: 1. As has been discussed in class the electron transport chain is the first part of oxidative…
A: The electron transport chain (ETC) is a collection of protein complexes found in prokaryotes' plasma…
Q: An example of omega-3 fatty acid is? Arachidonic acid Alpha-linolenic acid Linoleic acid Oleic acid
A: Long chains of hydrogen-attached carbon atoms give rise to the chemical compounds known as fatty…
Q: Ceramide is in which lipid class? A) triacylglycerols b) phospholipids c) glycolipids d)…
A: Lipids are a chemically diverse group of biomolecules that have two things in common:low solubility…
Q: Consider an enzyme-catalyzed reaction that follows Michaelis-Menten kinetics with KM =3.0 mmol·dm-3…
A: When a substrate (S) binds to the active site of an enzyme (E), it leads to the formation of an ES…
Q: (c2) Identify the active site residues that make hydrogen bonds and electrostatic interac- tions…
A: In order for an enzyme to properly bind its substrate and catalyze the reaction, several binding…
Q: What peptides are expected to be produced when an unknown hormone (…
A: The amino acid sequence of the hormone of concern in one-letter abbreviation is given…
Q: Proto-oncogenes are genes that have the potential to become oncogenes through either mutation or an…
A: Genes are the segments of DNA that code for proteins. These are passed from parents to offspring. A…
Q: Match each of the following aspects of triacylglycerols (TAGs) with the main structural feature…
A: There are four classes of biological macromolecules - they are nucleic acid, proteins, lipids and…
Q: There is another melanocyte-stimulating hormone called B-melanotropin. Cleavage of 3-melanotropin…
A: We have find out the sequence of amino acids
Q: Why is the citric acid cycle the central pathway in metabolism? (Select all that apply.) Citric acid…
A: The citric acid cycle, sometimes referred to as the Krebs cycle, is an important metabolic process…
Q: Lipid storage droplets are the only human organelle known that is bound by phospholipid monolayer…
A: A lipid monolayer is a single layer of lipid molecules that forms at the interface between two…
Q: Which of the following is TRUE? Chylomicrons have more triglycerides than HDLs. HDL carries both…
A: In the human body, lipoproteins are essential for lipid transport and metabolism. The equilibrium of…
Q: fertilizers
A: In various regions with distinct geographic characteristics, fertilizers containing zinc have been…
Q: protein Insulin (also see Fig 14.24) Ferritin Myoglobin Hemoglobin Ribonuclease a-keratin Collagen…
A: Insulin is a protein hormone, and its structure is quite fascinating. It's made up of two chains of…
Q: Draw a representation of an allosteric binding site of an enzyme. The allosteric site must bind an…
A:
Q: Which of the following statements describes one reason that plant oils are generally healthier for…
A: Plant oils are liquid fats extracted from various plant sources, such as seeds, nuts, and fruits.…
Q: Dextrose 5% in water solution is an example of hypertonic solution. True False?
A: Hypertonic solution is defined as the solution that contains high concentration of solutes than the…
Select all answers that apply
Step by step
Solved in 3 steps
- Which lipid sample (butter/ oil) is soluble or miscible in 70% ethanol? Explain. Do you think the solubility of the lipid samples will change if 100% ethanol is used instead?At what pH does a lysine solution exhibit the highest buffering capacity? (Lysine pKas: pk1 = 2.2, pK2 = 8.95, pK3 = 10.5) %3D O рH 12.1 О рH 9.72 O pH 5.67 pH 8.95The standard curve to determine the amount of betacyanin is shown below. You extracted a red pigment from a beet disc (the mass of a disc is 2 g) using 10 ml of 20% ethanol solution. You measured absorbance of the solution above the beet disc every minute for a total time of 20 minutes. The increase in absorbance was linear during a period of time from 1 min to 10 min. The absorbance at 10 min was 0.8. Calculate the amount of betacyanin extracted from 1g of a beet tissue per minute. Explain your calculations. You can use Excel or a calculator.
- Which of the following is TRUE if pH is higher than the pka of the buffer? O [weak acid] approximately 0 O [conjugate base] = [weak acid] [conjugate base] > [weak acid] O [conjugate base] < [weak acid]A researcher prepares 100 mL of aqueous solution containing 0.1 g of a protein. The researcher then uses an experimental apparatus ,where he notes that, at room temperature (300K) and atmospheric pressure (101.325 kPa), distilled water flows naturally into the solution compartment. However, when he applies an extra pressure of 1000 Pa he observes that the flow of distilled water ceases and the system is in balance. Calculate the molar mass of this protein, in kDa (1 Da = 1 g/ mol); Why does the flow of distilled water cease with the application of the pressure of 1000 Pa? Explain in terms of potential chemicals. %3DHow much of the enzyme proteinase k (solute) is required to make 250ml of a solution with a concentration of .01mg/ml? (Weight/volume ratio)
- An appropriate biochemical buffer should have charges in both its conjugate acid and conjugate base form. This avoids the presence of a neutral form of the buffer that might be able slowly leak into cells. Does unmodified dimethylpiperazine meet this criterion when buffering at pH 8? O Yes No What about buffering at pH 4? D Yes NoSuppose you wanted to make a buffer of exactly pH 7.00 using KH2PO4 and Na2HPO4. If the final solution was 0.1 M in KH2PO4, what concentration of Na2HPO4 would you need?You have been observing an insect that defends itself from enemies by secreting a caustic liquid. Analysis of the liquid shows it to have a total concentration of formate plus formic acid (K₁ = 1.8 x 10-4) of 1.45 M. Further analysis reveals that the concentration of formate ion is 0.015 M. What is the pH of the secretion? pH =
- A glucosamine solution of unknown concentration was diluted as follows: 1 mL of the solution was diluted to 5.0 mL. A 0.3 mL aliquot of this solution was diluted with 0.7 mL of water; the absorbance of this was measured and found to be 0.440 (uncorrected, must subtract blank). What is the concentration of the original undiluted glucosamine hydrochloride solution in µmol/mL? Given: Corrected absorbance = 0.395 y= 1.165x+0.055 Standard equationA mixture of lipids containing phosphatidic acid, cholesterol, testosterone, phosphatidylserine, andphosphatidylethanolamine was applied to a hydrophobic interaction chromatography column. Thecolumn was washed with a high salt buffer, and the lipids were then eluted with decreasing saltconcentrations. In what order would the lipids be eluted from the column? Explain your answer.Define the following:- pH- Buffer- pKa