1.What type of bonds stabilizes the quaternary structure of proteins? * A. Peptide bond B. Electrostatic interactions C. Hydrogen bonds D. Disulfide bridges E. Hydrophobic bonds 2. A new drug is developed which selectively cleaves covalent bonds between two sulfur atoms of non-adjacent amino acids in a polypeptide chain. Which level of protein structure in affected molecules would be most directly affected by the drug? * A. Primary B. Secondary C. Tertiary D. Quaternary

1.What type of bonds stabilizes the quaternary structure of proteins? * A. Peptide bond B. Electrostatic interactions C. Hydrogen bonds D. Disulfide bridges E. Hydrophobic bonds 2. A new drug is developed which selectively cleaves covalent bonds between two sulfur atoms of non-adjacent amino acids in a polypeptide chain. Which level of protein structure in affected molecules would be most directly affected by the drug? * A. Primary B. Secondary C. Tertiary D. Quaternary

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

Chapter3: Biological Molecules: The Carbon Compounds Of Life

Section: Chapter Questions

Problem 8TYK: The first and major effect in denaturation of proteins is that: a. peptide bonds break. b. helices...

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Hello, please help me with my assignment. Can you answer ALL QUESTIONS EXCEPT QUESTIONS 1-31. Which of the following statements is accurate regarding these protein structures?a. Proteins in a quaternary structure consist of a simple polypeptide chain.b. Interactions between the R groups in amino acids form tertiary structure.c. Secondary structures are formed by multiple polypeptide chains.d. The two types of primary structure are α- helices and β- pleated sheets. 2. What type of bonds are formed between amino acids?a. Peptide bondb. Glycosidic linkagec. Hydrogen bondsd. Ester linkages 3. Which of the following is an example of protein denaturation?a. Amino acids fold into repeating patterns due to hydrogen bonding of the peptide backbone.b. Several amino acids are joined together via peptide bonds.c. A protein binds with a substrate, lowering the activation energy of a reaction.d. A protein is exposed to extremely high heat, causing it to lose its secondary structure and be leftwith…
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Which of the following statement about quaternary structure of protein is correct? Select one: a. Quaternary structure is a force between different polypeptides. b. Hydrogen bond is an only force found in quaternary structure. c. Quaternary structure contains one polypeptide. d. Quaternary structure is an unfolded form of protein.
Please Answer numbers 1, 2 & 3 thank you 1. Which of the following intermolecular molecular forces of attraction is disrupted when a native protein is added with acetic acid? a. Hydrogen bond b. Peptide bond c. Disulfide bond d. Salt bridge e. van der Waals force 2. Suppose a protein sample with a fragment containing the following amino acid sequence is subjected to various chemical assay/tests. - Ala-Gly-Phe-Met-Cys- which of the following test will the sample be positive? a. Lead-sulfide test b. Hopkins cole's test c. Millon's test d. Xanthoproteic test 3. Suppose a protein sample with a fragment containing the following amino acid sequence is subjected to various chemical assay/tests. - Ala-Gly-Trp-Phe-Met-Cys- What is observed when the protein sample is subjected to Millon’s test? a. Violet interface b. Red precipitate/solution c. Brown/black precipitate d. Yelllow product e. No observable result
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Label: 1) the type of chemical bonds between the amino acids (e.g. covalent bond, ionic bond, metallic bond) 2) the type of interparticle forces of attraction occurring within the protein and with its environment *Indicate at least four observed interparticle forces of attraction *pink - negatively charged, blue - positively charged, yellow - nonpolar and uncharged, green - polar and uncharged *[See example picture] The chemical bond (shown by the arrow) is depicted as a line between the amino acids. Interparticle forces of attraction, such as the one between Phe and Glu (boxed), are not represented by lines but rather by the proximity of amino acids.
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