Which of the following has a tertiary protein structure?
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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 quaternaryIn a lipid bilayer, the of all the lipid molecules are sandwiched between all of the __________. a. hydrophilic tails; hydrophobic heads b. hydrophilic heads; hydrophilic tails c. hydrophobic tails; hydrophilic heads d. hydrophobic heads; hydrophilic tailsWhich of the following is the first step in folding a linear polypeptide into an ordered functional protein? O Secondary Primary Quaternary Tertiary
- Which of the following is the primary driving force for protein folding? disulfide bridges internal hydrogen-bonds the hydrophobic effect Van der Waals forces O salt bridgesHydrogen bonds that form a helices and B-pleated sheets are the primary interaction in which level of protein structure? O secondary O quaternary O primary O tertiaryThe following is an example of which level of protein structure? What bonds form this level of structure? Asp-Met-Leu-Trp-Gly-Asn-Lys
- 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 processLinus 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 aboveAfter denaturation of a tertiary protein like lysozyme (with one polypeptide chain), the only remaining bonds between its monomer subunits will be: the disulfide bonds the van der Waals forces the peptide bonds the hydrogen bonds the ionic bonds
- 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 bilayerWhich of the following best describes how the secondary structure of a protein is formed? A B с D O=U a-helix H O=C N-H R-C-H C=0 H-N H-C-R O=C N-H R-C-H C=O H-N O-C N-H R-C-H C=O H-N N-H 0= H-C-R H-N C=O R-C-4 N-H O=C H-C-R 4-1 Ç=O R-C-H N-H 0=C H-C-R (=O R-C-H B-pleated sheet ionic bonds between the R groups of the polypeptide amino acids -Uh hydrogen bonds between the carboxyl and amino groups of non-adjacent amino acids covalent bonds between the carboxyl and amino groups of adjacent amino acids hydrogen bonds between the R groups of the polypeptide amino acidsA polar functional group that forms disulfide bridges and stabilizes protein tertiary structure is O -NH2 O-COOH O -PO4 O-SH O -OH
