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Proteins quiz

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  • How do amino acids affect the tertiary structure of a protein?
    Amino acids affect the tertiary structure of a protein through their unique R groups, which interact to form the overall 3D shape of the protein.
  • Which protein is synthesized by bound ribosomes?
    Insulin
  • Which function is not performed by proteins in the body?
    Energy storage
  • Which enzyme is important for breaking down protein?
    Pepsin
  • Which bonds and interactions contribute directly to a protein's tertiary structure?
    All of the above
  • Keratin and collagen are examples of which class of proteins?
    Structural proteins
  • What protein provides flexibility and strength to connective tissues?
    Collagen
  • Which protein makes up the thick filaments?
    Myosin
  • Which is mixed with proteins to break them into amino acids? Options: A) Water B) Hydrochloric acid C) Enzymes D) All of the above
    D) All of the above
  • Which statement about quaternary protein structure is incorrect?
    Quaternary structure involves only one polypeptide chain.
  • What is the protease enzyme (enzyme which digests/breaks down proteins) in the small intestine?
    Trypsin
  • What are the two basic types of secondary structure in proteins?
    Alpha helices and beta sheets
  • What is the most abundant structural protein in the body?
    Collagen
  • How many levels of structure do proteins have?
    Four levels: primary, secondary, tertiary, and quaternary
  • Which vitamin is needed for protein synthesis?
    Vitamin B6
  • What are the four levels of protein structure?
    Primary, secondary, tertiary, and quaternary
  • What is not a function of protein in the body?
    Energy storage
  • What level of protein structure describes the spatial location of every atom in a protein?
    Tertiary structure
  • Which level of protein structure do the α-helix and the β-pleated sheet represent?
    Secondary structure
  • Which nutrient class is used to build body tissues and make enzymes?
    Proteins
  • What is a true statement about body proteins?
    They are involved in almost every biological process.
  • Which protein stimulates appetite and decreases energy expenditure?
    Ghrelin
  • Which enzymes digest proteins?
    Pepsin and trypsin
  • Each amino acid has a carbon atom that is attached to which four of the following? Options: A) Amino group, carboxyl group, hydrogen atom, R group B) Amino group, hydroxyl group, hydrogen atom, R group C) Carboxyl group, hydroxyl group, hydrogen atom, R group D) Amino group, carboxyl group, hydroxyl group, R group
    A) Amino group, carboxyl group, hydrogen atom, R group
  • Which protein structure level is directly related to a single amino acid?
    Primary structure
  • What guides the process of protein folding?
    It is guided by the primary structure.