Which of the following statements is not true about protein folding ? Protein folding is a process by which a polypeptide chain form a stable 3D structure. Protein folding leads to loss of function and causes a wide range of diseases When protein is defolded, peptide bonds are not affected. O Protein folding is essential for proper function of proteins.

Which of the following statements is not true about protein folding ? Protein folding is a process by which a polypeptide chain form a stable 3D structure. Protein folding leads to loss of function and causes a wide range of diseases When protein is defolded, peptide bonds are not affected. O Protein folding is essential for proper function of proteins.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter3: The Chemistry Of Life: Organic Compounds

Section: Chapter Questions

Problem 9TYU: Which of the following levels of protein structure may be affected by hydrogen bonding? (a) primary...

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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
There is a "primary driving force" behind protein folding (to form tertiary structure). This driving force can be used to explain below phenomenon except: water has a high density and a high boiling temperature non-polar amino acids go inside a protein long chain fatty acids form micelles oil spills go to the surface of water phospholipids form lipid bilayer
Which of the following statements about protein folding is incorrect? Select all. GroEL/GroES allow unfolded proteins the chance to fold within an isolated cavity. Heat shock proteins bind to regions of unfolded polypeptides that are rich in hydrophobic residues, preventing inappropriate aggregation. Many molecular chaperones require ATP for proper function. Molecular chaperones are required for the folding of all cellular proteins.
At what level of protein structure (primary, secondary, tertiary, or quaternary) will protein structure be initially altered? Heating a protein (due to fever), causing hydrogen bonds to break. Drastic changes in pH (like the above patients), causing some polar amino acids to turn into non-polar amino acids
Which level of protein folding is formed by interactions between amino acid side chains/R groups? primary secondary tertiary quaternary
Linus Pauling’s a-helix structure (found in hemoglobin, myoglobin, actin, myosin, and keratin) is one of the most common examples of which level of protein organization? the quaternary structure the tertiary structure the secondary structure the primary structure all of the above
Which of the following constitutes the primary structure of a protein? O the folding of a polypeptide chain the polypeptide chains stacked on top of each other O the linear sequence of amino acids in a polypeptide chain several polypeptide subunits
Which of the following statements concerning complete protein hydrolysis is incorrect? Primary structures are preserved Tertiary and secondary structures are disrupted All peptide bonds are broken Water is a reactant in the process
Which statement about intrinsically disordered proteins is true? ○ They contain small hydrophobic cores ○ They represent misfolded conformations of cellular proteins ○ Lack of stable three-dimensional structure precludes a role in cellular function ○ They are responsible for proteostasis ○ They can be central players in protein interaction networks
Which of the following statements about protein is correct? (Choose three). * During polypeptide bond formation, the hydroxyl group is lost from its carboxyl group of one amino acid and a hydrogen atom is lost from its amino group of another amino acid Amino acid sequence of a protein determines its three-dimensional shape. pH change, organic solvents, heat, and chaperones are the factors responsible for the denaturation of proteins. Secondary protein structures such as alpha helices and beta pleated sheets are formed by multiple polypeptide chains. Different amino acids contain different side chains which make them unique.
ch one of the following statements about protein structure is NOT correct? . Domains are discrete parts of a protein structure, usually associated with a particula function. true Beta-sheets are stabilised by hydrogen bonds between amino-hydrogens and carbonyl-oxygens from peptide bonds. no adjacent hydrogen bonding Proteins made from three polypeptide chains show quaternary structure. Yes Smaller protein domains come together to from supersecondary structures and mo
Select the true statements about protein secondary structure. In an a-helix, the side chains are located on the outside of the helix. The secondary level of protein structure refers to the spatial arrangements of short segments of the protein. In a B-pleated sheet, the side chains are located between adjacent segments. Peptide bonds stabilize secondary structure. The x-helix is held together by hydrogen bonds between the amide N-H and C=O groups. Incorrect