Proteins: The Building Blocks of Life
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Questions and Answers

Which biomolecule accounts for more than 50% of the dry mass of most cells?

  • Proteins (correct)
  • Nucleic acids
  • Carbohydrates
  • Lipids
  • What is the classification of proteins based on their solubility and composition?

  • Simple, conjugated, and derived proteins (correct)
  • Fibrous and globular proteins
  • Integral and peripheral proteins
  • Primary, secondary, tertiary, and quaternary proteins
  • Which type of protein is readily soluble in water, dilute acids, and alkalies, and coagulates by heat?

  • Albumins (correct)
  • Globulins
  • Scleroproteins
  • Histones
  • Which type of protein yields only amino acids upon hydrolysis?

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

    What are enzymes?

    <p>Proteins that act as biological catalysts</p> Signup and view all the answers

    Mitochondria is a double membrane bound organelle found in the cytoplasm of ______ cells.

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

    The term mitochondria was coined by Carl Benda in ______.

    <p>1898</p> Signup and view all the answers

    Mitochondria produce enzymes for the metabolic conversion of food to ______.

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

    Mitochondria are responsible for the conversion of nutrients into energy– yielding molecule ATP to fuel the cell's ______.

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

    Aerobic respiration involves: Glycolysis, Krebs cycle, and Electron transport ______.

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

    The closest extant relatives of Bacteria that gave rise to mitochondria are ______.

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

    Mitochondrial membranes outer membrane relatively ______

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

    Inner membrane ______ only to those things with specific transporters

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

    Impermeable to NADH and ______

    <p>FADH2</p> Signup and view all the answers

    Permeable to ______

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

    Kreb's and β-oxidation in ______

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

    Possess ribosomes, circular DNA to manufacture their own RNAs and ______

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

    Mitochondria convert the chemical energy of reduced carbon compounds into ______

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

    Chloroplasts convert light energy to the energy of reduced carbon ______

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

    Electrons ultimately reduce oxygen to ______

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

    The glycerol phosphate shuttle transfers electrons from NADH to dihydroxyacetone phosphate (DHAP) to form glycerol 3-phosphate, which shuttles them into the ______

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

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