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Questions and Answers
What type of structure represents the overall folding of polypeptide chains?
What type of structure represents the overall folding of polypeptide chains?
- Secondary structure
- Primary structure
- Tertiary structure (correct)
- Quaternary structure
Which structure of proteins is held together by intermolecular hydrogen bonds and resembles pleated folds?
Which structure of proteins is held together by intermolecular hydrogen bonds and resembles pleated folds?
- Tertiary structure
- Primary structure
- Quaternary structure
- Secondary structure (correct)
What is the main force that stabilizes the secondary and tertiary structures of proteins?
What is the main force that stabilizes the secondary and tertiary structures of proteins?
- Ionic bonds
- Disulfide linkages (correct)
- Hydrophobic interactions
- Covalent bonds
Which molecular shape can the tertiary structure of proteins give rise to?
Which molecular shape can the tertiary structure of proteins give rise to?
What is the spatial arrangement of sub-units in proteins known as?
What is the spatial arrangement of sub-units in proteins known as?
Which protein structure represents the folding of polypeptide chains beyond the primary structure?
Which protein structure represents the folding of polypeptide chains beyond the primary structure?
What is the product called when three amino acids are linked together?
What is the product called when three amino acids are linked together?
Which structure is formed in fibrous proteins when polypeptide chains run parallel and are held together by hydrogen and disulphide bonds?
Which structure is formed in fibrous proteins when polypeptide chains run parallel and are held together by hydrogen and disulphide bonds?
What is the structure called when the chains of polypeptides coil around to give a spherical shape?
What is the structure called when the chains of polypeptides coil around to give a spherical shape?
Which type of protein is generally insoluble in water and exhibits a fiber-like structure?
Which type of protein is generally insoluble in water and exhibits a fiber-like structure?
In which type of protein structure do the polypeptide chains form a coiled, spring-like shape?
In which type of protein structure do the polypeptide chains form a coiled, spring-like shape?
Which type of protein structure involves polypeptide chains running parallel and forming hydrogen and disulphide bonds?
Which type of protein structure involves polypeptide chains running parallel and forming hydrogen and disulphide bonds?
What is the primary structure of a protein defined as?
What is the primary structure of a protein defined as?
Which structure of protein involves hydrogen bonding between the -NH and -CO groups of the peptide bond?
Which structure of protein involves hydrogen bonding between the -NH and -CO groups of the peptide bond?
In which structure does a polypeptide chain form all possible hydrogen bonds by twisting into a right-handed screw?
In which structure does a polypeptide chain form all possible hydrogen bonds by twisting into a right-handed screw?
What type of structure is formed when the backbone of the polypeptide chain folds into a zigzag pattern?
What type of structure is formed when the backbone of the polypeptide chain folds into a zigzag pattern?
Which level of protein structure refers to the overall 3D shape of a protein?
Which level of protein structure refers to the overall 3D shape of a protein?
What is the quaternary structure of a protein defined as?
What is the quaternary structure of a protein defined as?
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