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Macromolecules: Carbohydrates, Proteins, and Nucleic Acids

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Termini in questo insieme (20)

  • What are the monomers of carbohydrates?

    Monosaccharides are the monomers of carbohydrates, such as glucose and fructose.

  • What type of bond links monosaccharides in carbohydrates?

    Glycosidic bonds link monosaccharides to form disaccharides and polysaccharides.

  • Name the main functions of carbohydrates.

    Carbohydrates provide energy storage, structural support, and serve as cell recognition molecules.

  • What are the monomers of proteins?

    Amino acids are the monomers of proteins, linked by peptide bonds.

  • What type of bond connects amino acids in proteins?

    Peptide bonds connect amino acids to form polypeptides.

  • List the four levels of protein structure.

    Primary (amino acid sequence), secondary (alpha helices and beta sheets), tertiary (3D folding), and quaternary (multiple polypeptide chains).

  • What are the main functions of proteins?

    Proteins function as enzymes, structural components, transport molecules, and signaling molecules.

  • What are the monomers of nucleic acids?

    Nucleotides are the monomers of nucleic acids, composed of a sugar, phosphate group, and nitrogenous base.

  • What type of bond links nucleotides in nucleic acids?

    Phosphodiester bonds link nucleotides to form the sugar-phosphate backbone.

  • Name the two main types of nucleic acids and their functions.

    DNA stores genetic information; RNA is involved in protein synthesis.

  • What is the structural difference between DNA and RNA nucleotides?

    DNA contains deoxyribose sugar and thymine; RNA contains ribose sugar and uracil.

  • How do hydrogen bonds contribute to nucleic acid structure?

    Hydrogen bonds form between complementary bases, stabilizing the double helix in DNA.

  • What is a polymer in biological macromolecules?

    A polymer is a large molecule made of repeating monomer units linked by covalent bonds.

  • Explain the role of dehydration synthesis in forming polymers.

    Dehydration synthesis removes water to form covalent bonds between monomers, building polymers.

  • What is hydrolysis in the context of macromolecules?

    Hydrolysis breaks polymers into monomers by adding water to break covalent bonds.

  • Which macromolecule is primarily used for long-term energy storage?

    Carbohydrates, especially polysaccharides like starch and glycogen, store energy long-term.

  • What determines the function of a protein?

    The shape and structure of a protein, determined by its amino acid sequence, dictate its function.

  • Name a common structural carbohydrate in plants.

    Cellulose is a structural carbohydrate forming plant cell walls.

  • What is the significance of the nitrogenous base sequence in nucleic acids?

    The sequence of nitrogenous bases encodes genetic information.

  • How do monomers differ from polymers?

    Monomers are single building blocks; polymers are chains of monomers linked together.