WK 1: Molecules of Life: Biomolecules and Cellular Structures
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Questions and Answers

What is the role of nucleic acids in the cell?

  • Provide structural support to the cell
  • Store and transmit genetic information (correct)
  • Act as enzymes and hormones
  • Regulate cell adhesion and neuronal receptors

    • What is the process by which polymers are formed?

  • Condensation reaction
  • Dehydration synthesis (correct)
  • Hydrolysis
  • Fermentation

    • What is the function of phospholipids in the cell?

  • To store energy
  • To regulate gene expression
  • To form the membrane of cells (correct)
  • To provide structural support to the cell

    • What is the monomer of carbohydrates?

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

    What is the process by which monomers are recovered from polymers?

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

    What is the type of protein that provides structural support to the cell?

    <p>Fibrous proteins</p> Signup and view all the answers

    What is the process called when a polymer is broken down into monomers with the addition of a water molecule?

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

    What is the primary function of ATP in the cell?

    <p>Energy currency</p> Signup and view all the answers

    What is the main difference between DNA and RNA molecules?

    <p>DNA is double-stranded, while RNA is single-stranded</p> Signup and view all the answers

    What is the monomer of nucleic acids?

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

    What is the process by which polymers are formed?

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

    What type of carbohydrates is glycogen an example of?

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

    What type of protein is human growth hormone?

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

    What is the main constituent of cell walls?

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

    What is the purpose of glycogen in animal tissues?

    <p>To store excess glucose</p> Signup and view all the answers

    What type of molecules are DNA and RNA?

    <p>Nucleic acids</p> Signup and view all the answers

    What is the process by which glucose is stored in animal tissues?

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

    What is the ratio of hydrogen to oxygen atoms in a carbohydrate molecule?

    <p>2:1</p> Signup and view all the answers

    What type of reaction links amino acid monomers to form polypeptides?

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

    What is the typical length of a peptide?

    <p>2-50 amino acids</p> Signup and view all the answers

    What is the fate of amino acids broken down in the body?

    <p>They enter the urea cycle and Krebs cycle</p> Signup and view all the answers

    What is the role of post-translational modifications in proteins?

    <p>To change the structure and function of the coded protein</p> Signup and view all the answers

    What type of carbohydrates is glycogen an example of?

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

    What is the role of nucleic acids in the cell?

    <p>To store genetic information</p> Signup and view all the answers

    What is the primary function of triglycerides in the cell?

    <p>To serve as a long-term energy storage molecule</p> Signup and view all the answers

    What is the characteristic of phospholipids that makes them ideal for forming cell membranes?

    <p>Their ability to form a bilayer structure</p> Signup and view all the answers

    What is the role of cholesterol in the cell membrane?

    <p>To maintain membrane fluidity, especially at lower temperatures</p> Signup and view all the answers

    What type of carbohydrate is a long-term energy storage molecule in the cell?

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

    What is the monomer of nucleic acids?

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

    What is the characteristic of lipids that makes them non-polar molecules?

    <p>Their hydrophobic nature</p> Signup and view all the answers

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