30 Questions
Which of the following is true about proteins?
Proteins are a type of macromolecule
What is the term for the bond formed between amino acids in a polypeptide?
Peptide bond
Which level of protein structure is determined by interactions between R-groups and the peptide backbone?
Tertiary structure
What is the function of antibodies?
Defense against pathogens
Which of the following is true about hydrogen bonds in protein structure?
Hydrogen bonds form between hydrogen atoms and the peptide backbone
What is the primary structure of a protein?
Unique sequence of amino acids
Which level of protein structure is based on tertiary structure?
Quaternary structure
What is the function of enzymes?
Speeding up chemical reactions
What is the role of collagen in vertebrates?
Structural support
What is the highest level of protein structure?
Quaternary structure
Which level structure is based on primary structure?
Secondary structure
What allows for amazing diversity in protein form and function?
Tertiary structure
What makes a folded protein molecule more energetically stable than an unfolded molecule?
Both hydrogen bonds and van der Waals interactions
What do molecular chaperones help proteins do in cells?
Fold correctly
What happens to a denatured protein?
It loses its primary structure
What is denaturation?
The breakdown of secondary and tertiary structures
What are prions?
Proteins that are improperly folded forms of normally present proteins
What does X-Ray Crystallography measure?
The angle with which x-rays are diffracted
What does Western Blotting detect?
Specific proteins
What external conditions can cause denaturation?
Both high temperature and changes in pH
Which of the following is true about proteins?
Proteins are made of amino acids.
What are the four levels at which the structure of a protein can be analyzed?
Amino acid sequence, α-helices and β-pleated sheets, protein folding, protein interactions.
What is the function of most proteins in cells?
To function as catalysts.
What is the central carbon atom in an amino acid bonded to?
NH2, COOH, H, and a variable side chain.
What helps amino acids stay in solution and makes them more reactive?
Formation of hydrogen bonds with water.
What is the role of R-groups in amino acids?
To determine the properties of amino acids.
Which type of R-groups in amino acids are hydrophobic?
Nonpolar R-groups.
Which type of R-groups in amino acids readily dissolve in water?
Polar R-groups.
Which type of R-groups in amino acids are more chemically reactive?
Polar R-groups.
What are the monomers that link together to form proteins?
Amino acids.
Test your knowledge on protein structure and function with this quiz! Explore the four levels of protein analysis and learn about amino acids, α-helices, β-pleated sheets, and more.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
