multiple choice urgent! Key properties of proteins includea. a wide range of functional groups.an ability to possess either rigid or flexible structures as dictated by functionalrequirements.C.the ability to interact with other proteins.d.a and b.e. All of the above.Which amino acids in chymotrypsin are found in the active site and are participants in substratecleavage?a. his, ser, asp b. his, ser c. asp, lys d. lys, argMembranes are primarily comprised ofa. lipids. b. proteins. c. collagen.e. his, ser, argd. A and B. e. A, B, and C.Which of the following membranes would be the most fluid?a. A bilayer made of lipids with polyunsaturated 18 carbon-fatty acidsb. A bilayer made of lipids with saturated 18 carbon-fatty acidsc. A bilayer made of lipids with saturated 16 carbon-fatty acidsd. A bilayer made of lipids with polyunsaturated 16 carbon-fatty acidse. All of the above are equivalent in fluidity.Below are several oxygen dissociation curves. Assume that curve 3 corresponds to hemoglobinwith physiological concentrations of CO2 and BPG at pH 7. Match the descriptions to thecurves.Saturation (Y)23a. decrease in pCO2b. increase in BPGc. increase in pHd. loss of quaternary structure

1. Key properties of proteins include:Correct answer: e. All of the aboveExplanation:Proteins are…

Answered: Key properties of proteins include a. a…

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter4: Cells

Section: Chapter Questions

Problem 1ITD

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Explain what happens if even one amino acid is substituted for another in a polypeptide chain. Provide a specific example.
Polypeptide folding is often mediated by other proteins called chaperones. Describe how a mutant chaperone protein might be responsible for a genetic disorder involving an enzyme.
Which of the following statements about the allosteric site is true? a. The allosteric site is a second active site on a substrate in a metabolic pathway. b. The allosteric site on an enzyme can allow the product of a metabolic pathway to inhibit that enzyme and stop the pathway. c. When the allosteric site of an enzyme is occupied, the reaction is irreversible and the enzyme cannot react again. d. An allosteric activator prevents binding at the active site. e. An enzyme that possesses allosteric sites does not possess an active site.
Which of the following levels of protein structure may be affected by hydrogen bonding? (a) primary and secondary (b) primary and tertiary (c) secondary, tertiary, and quaternary (d) primary, secondary, and tertiary (e) primary, secondary, tertiary, and quaternary
If phenylalanine was not an essential amino acid, would diet therapy (the elimination of phenylalanine from the diet) for PKU work?
Understanding the Relevance of Chaperones in Protein Folding Protein molecules, like all molecules, can be characterized in terms of general properties such as size, shape, charge, solubility/hydrophobicity. Consider the influence of each of these general features on the likelihood of whether folding of a particular protein will require chaperone assistance or not. Be specific regarding just Hsp7O chaperones or Hsp7O chaperones and Hsp60 chaperonins.
Figure 16.13 An increase in phosphorylation levels of elF-2 has been observed in patients with neurodegenerative diseases such as Alzheimer’s, Parkinson's, and Huntington's. What impact do you think this might have on protein synthesis?
b. Compounds A, B, C, and D are known to be intermediates in the pathway for production of protein E. To determine where the block in protein-E production occurred in each individual, the various intermediates were given to each individuals cel Is in culture. After a few weeks of growth with the intermediate, the cells were assayed for the production of protein E. The results for each individuals cells are given in the following table. A plus sign means that protein E was produced after the cells were given the intermediate listed at the top of the column. A minus sign means that the cells still could not produce protein E even after being exposed to the intermediate at the top of the column. Denote the point in the pathway in which each individual is blocked.
a. Compounds A, B, C, and D are known to be intermediates in the pathway for production of protein E. To determine where the block in protein-E production occurred in each individual, the various intermediates were given to each individuals cel Is in culture. After a few weeks of growth with the intermediate, the cells were assayed for the production of protein E. The results for each individuals cells are given in the following table. A plus sign means that protein E was produced after the cells were given the intermediate listed at the top of the column. A minus sign means that the cells still could not produce protein E even after being exposed to the intermediate at the top of the column. Draw the pathway leading to the production of protein E.
a. Can a mutation change a proteins tertiary structure without changing its primary structure? b. Can a mutation change a proteins primary structure without affecting its secondary structure?
Match the terms related to protein building.
Describe the four levels of protein structure. How do a proteins side groups influence its interactions with other substances? What happens when a protein is denatured?

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