Macromolecules Quiz
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Questions and Answers

What are lipids broadly defined as?

  • Molecules soluble in nonpolar solvents
  • Hydrophobic molecules with an aliphatic chain (correct)
  • Large biomolecules comprising long chains of amino acid residues
  • Long polymer chains of sugars

    • What is the main component of cell membranes?

  • Steroids
  • Phospholipids (correct)
  • Terpenes
  • Triacylglycerols

    • What are polysaccharides composed of?

  • Aromatic rings
  • Long chains of amino acid residues
  • Monosaccharide units bound together by glycosidic bonds (correct)
  • Two monosaccharides joined by a glycosidic bond

    • What does amphipathic mean in the context of cell membranes?

    <p>Having both hydrophilic and hydrophobic parts</p> Signup and view all the answers

    What is the main component of insect exoskeleton?

    <p>Chitin</p> Signup and view all the answers

    What is the overall shape of a polypeptide resulting from interactions between the various amino acids called?

    <p>Tertiary structure</p> Signup and view all the answers

    What are the monomers of nucleic acids called?

    <p>Nucleotides</p> Signup and view all the answers

    What is the composition of DNA?

    <p>Cytosine, Thymine, Adenine, Guanine</p> Signup and view all the answers

    Which process uses DNA as a template to produce a pre-mRNA (transcript)?

    <p>Transcription</p> Signup and view all the answers

    What is the result of a single amino acid substitution in hemoglobin?

    <p>Sickle-cell disease</p> Signup and view all the answers

    What is the covalent bond between amino acids called?

    <p>Peptide bond</p> Signup and view all the answers

    What is the overall structure that results from the aggregation of more than one polypeptide subunit called?

    <p>Quaternary structure</p> Signup and view all the answers

    What is the main component of insect exoskeleton?

    <p>Polysaccharides</p> Signup and view all the answers

    What are lipids broadly defined as?

    <p>Molecules soluble in nonpolar solvents</p> Signup and view all the answers

    What does amphipathic mean in the context of cell membranes?

    <p>Having both hydrophilic and hydrophobic parts</p> Signup and view all the answers

    What is the composition of DNA?

    <p>Polynucleotides made up of nucleotide monomers</p> Signup and view all the answers

    What is the composition of chitin?

    <p>Long-chain polymer of N-acetylglucosamine</p> Signup and view all the answers

    What is the main difference between DNA and RNA?

    <p>DNA contains thymine, while RNA contains uracil</p> Signup and view all the answers

    What is the overall structure that results from the aggregation of more than one polypeptide subunits called?

    <p>Quaternary structure</p> Signup and view all the answers

    What is the result of a single amino acid substitution in hemoglobin?

    <p>It causes sickle-cell disease</p> Signup and view all the answers

    What is the main component of cell walls of green plants?

    <p>Cellulose</p> Signup and view all the answers

    What is the primary structure of a protein?

    <p>The sequence of amino acids</p> Signup and view all the answers

    What are proteins encoded in?

    <p>DNA</p> Signup and view all the answers

    What is the monomer of nucleic acids called?

    <p>Nucleotide</p> Signup and view all the answers

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