45 Questions
Which of the following is true about polar molecules?
They contain oxygen, nitrogen, sulfur, or phosphorus atoms
Which of the following is true about noncovalent bonds?
They are broken using enzymes
Which type of bond is characterized by the sharing of electrons between atoms?
Covalent bond
Which of the following is NOT a basic property of cells?
They are all the same size
Which type of bond is relatively weak and forms attractive forces between atoms of opposite charges?
Ionic bond
Which type of noncovalent interaction is especially important in the behavior of water?
Hydrogen bond
Which type of bond holds molecules together through electrostatic attraction?
Ionic bond
Which level of protein structure involves the linking of polypeptide chains to form multisubunit functional proteins?
Quaternary Structure
What type of interaction helps stabilize protein structure through covalent linkage between cysteine residues?
Disulfide bridges
Which type of proteins are composed of two or more distinct modules that fold independently of one another?
Protein domains
What is the term for proteins that can adopt two or more conformations, regulated by something binding to its non-active site?
Allosteric proteins
What is the primary structure of a protein?
The unique arrangement of amino acids
Which of the following is a characteristic of nucleotides?
They are the monomers of nucleic acids
Which of the following is a characteristic of alpha-helices?
They can cross lipid bilayers
What are the four levels of protein structure?
Primary, secondary, tertiary, quaternary
Which of the following elements are found in polar molecules?
Oxygen (O)
Which of the following elements are found in nonpolar molecules?
Carbon (C)
What is the primary difference between polar and nonpolar molecules?
Polar molecules have a positive and negative end, while nonpolar molecules do not.
Which type of bond involves the sharing of electrons between atoms?
Covalent bond
Which type of bond is relatively weak and forms attractive forces between atoms of opposite charges?
Ionic bond
What is the term for the water-based gel that makes up the cytoplasm of a eukaryotic cell?
Cytosol
Which of the following elements are NOT found in polar molecules?
Carbon (C)
Which type of bond holds molecules together through attractive forces between atoms of opposite charges?
Ionic bond
Which of the following is a characteristic of lipids?
They are primarily used for energy storage
What is the function of hydrogen bonds in biological systems?
To stabilize adjacent molecules and form arrays or crystals
Which type of macromolecule is the primary source of cell energy?
Carbohydrates
Which of the following is a characteristic of monosaccharides?
They are the most abundant structural components on earth
Which type of bond is characterized by the sharing of electrons between atoms?
Covalent bond
Which of the following is NOT a function of lipids?
Chemical energy storage
Which of the following is NOT one of the four types of biological macromolecules?
Carbohydrates
What is the primary structure of a protein?
The linear sequence of amino acids making up the polypeptide chain
Which level of protein structure involves the linking of polypeptide chains to form multisubunit functional proteins?
Quaternary structure
Which type of noncovalent interaction is especially important in the behavior of water?
Hydrogen bonds
Which type of bond holds molecules together through electrostatic attraction?
Ionic bond
Which of the following is true about polar molecules?
They have a net dipole moment
What are the four levels of protein structure?
Primary structure, Secondary structure, Tertiary structure, Quaternary structure
Which type of protein structure involves long strands or flattened sheets that resist pulling?
Secondary Structure
Which type of noncovalent interaction occurs between R groups in the same polypeptide chain?
Van der Waals Interaction
Which type of bond is often covalently linked to another cysteine to help stabilize protein structure?
Disulfide Bridge
What is the term for the linking of polypeptide chains to form a multisubunit functional protein?
Quaternary Structure
Which type of protein structure can be stabilized by accessory proteins and may involve protein folding?
Tertiary Structure
Which type of protein can assume two or more conformations, regulated by something binding to its non-active site?
Allosteric Protein
What is the term for the part of a protein sequence that can function, evolve, and exist independently of the rest of the protein chain?
Protein Domain
What is the term for the large conformational change that can occur in a protein through ATP hydrolysis?
Protein Folding
How are cellular motors able to move along a track?
ATP Hydrolysis
Test your knowledge of biological macromolecules and their functions with this quiz. Learn about the structure and role of steroids, as well as the four types of macromolecules: carbohydrates, lipids, nucleic acids, and proteins. Explore how nucleic acids form nucleotides and play a crucial role in storing and transmitting genetic information.
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