What is the pH value where the protein molecule carries no electrical charge? a. isoelectric b. isopropyl c. isoleucine d. isomers
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Q: the four levels of protein structure
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What is the pH value where the protein molecule carries no electrical charge?
a. isoelectric
b. isopropyl
c. isoleucine
d. isomers
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- 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?Protein structure is directly related to function. Which of the following statements is true regarding this concept ? Polypeptide backbone -CH2 – CH, – CH2- CH2- NH3 0-c- CH - CH2 lonic bond Hydrogen ! bond C- NH2 Disulfide linkage CH CH2 HạC CH3 CH3 H3C CH -CH2 Hydrophobic interactions A. The primary structure consists of the DNA sequence. The secondary and tertiary structures are dependent on interactions between the DNA and RNA polymerase. Mutations resulting in changes one or more bases has the potential to destroy the structure, and therefore the function, of the protein. B. The primary structure consists of the amino acid sequence. The secondary and tertiary structures are dependent on interactions between the amino acid side chains. Mutations resulting in changes one or more amino acids has the potential to destroy the structure, and therefore the function, of the protein. C. The primary structure consists of the DNA sequence. The secondary structure consists of the amino acid…What exactly are proteins?What is a protein's building block? What are its chemical properties?How do proteins get denatured structurally? Explain it.What does it mean to have an isoelectric point? What is the significance of it? strictly no plagiarism.
- Describe the levels of structure of a protein and tell how they would be affected by: a. Hydrolysis with 6M HCl (breaks peptide bond)b. Heating with mercaptoethanol (breaks hydrogen bonds)Physical methods are often used to determine protein conformation. Describe how x-ray crystallography, cryo electron microscopy, and NMR spectroscopy can be used to determine the shapes of proteins. What are the advantages and disadvantages of each method? Which is better for small proteins? Large proteins? Huge macromolecular assemblies?Physical methods are often used to determine protein conformation. Describe how x-ray crystallography, cryoelectron microscopy, and NMR spectroscopy can be used to determine the shapes of proteins. What are the advantages and disadvantages of each method? Which is better for small proteins? Large proteins? Huge macromolecular assemblies?
- Which is responsible for the stabilization of parallel polypeptide chains in a beta-pleated sheet conformation? Van der Waals O covalent bonding O R-group interactions H-bondingHair is made of protein. The protein is a structural protein called α-keratin, which contains many disulfide (S-S) bridges formed from sulfhydryl functional groups found amongst amino acids radical groups. Based on how the protein folds, the radical groups have opportunities to generate multiple disulfide bridges. The greater the number of disulfide bridges, the more tightly the hair is coiled. Using your knowledge of proteins, write a brief paragraph theocratizing how sodium hydroxide is used in hair products to straighten hairProteins undergo  a process, called folding to establish their final, functional configuration. Amino acids them selves are covalently, bound to gather, but for other forces are needed to maintain a functional proteins structure. Briefly describe these forces.
- Select the incorrect statement(s). CH₂ OH NH₂ Polypeptide backbone CH₂ A C- CH₂ CH CH3 CH3 CH3 CH3 CH CH₂ NH₂ CH₂ CH₂ CH₂ CH₂ B D This is a tertiary structure of a protein. Letter A represents hydrogen bond. Letter C represents disulfide bond. This represents a secondary structure. This illustrates a quaternary structure.What life uses proteins for? (functions of proteins) Describe protein structures. Describe the alpha helix and the beta sheet structure of proteins. Which structure is the most important in the function of a protein? Describe what can affect the protein structure. Why the structure of a protein is important?Which of the following most directly applies to the formation of the secondary structures of proteins? A B с D formation of ionic bonds between the R groups of two polypeptides formation of nonpolar interactions between two R groups on the same polypeptide formation of covalent bonds via dehydration reactions between two amino acids formation of hydrogen bonds between between amino and carboxyl groups
