TCA Cycle and Aromatic Compounds Catabolism
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Questions and Answers

Who made significant contributions by proving the microbial basis for fermentation and refuting spontaneous generation?

  • Louis Pasteur (correct)
  • Robert Koch
  • Edward Jenner
  • John Tyndall
  • Which scientist is associated with the concept of Germ Theory of Fermentation?

  • John Tyndall
  • Robert Koch
  • Louis Pasteur (correct)
  • Edward Jenner
  • What is the main difference between eukaryotic and prokaryotic cells?

  • Prokaryotic cells are always multicellular, while eukaryotic cells are always unicellular.
  • Eukaryotic cells have membrane-bound organelles, while prokaryotic cells do not. (correct)
  • Prokaryotic cells have a nucleus, while eukaryotic cells do not.
  • Eukaryotic cells have a cell wall, while prokaryotic cells do not.
  • Which domain is not part of the three domains of microbial taxonomy & phylogeny?

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

    Who developed the smallpox variolation technique as a form of immunization?

    <p>Edward Jenner</p> Signup and view all the answers

    Which scientist established the principle of immunization and vaccination?

    <p>Louis Pasteur</p> Signup and view all the answers

    What is the main function of the Electron Transport Systems?

    <p>Generating proton motive force</p> Signup and view all the answers

    Which enzyme facilitates the breakage of aromatic compounds in their metabolism?

    <p>Dioxygenase enzymes</p> Signup and view all the answers

    What is the reduction potential (E) a measure of?

    <p>Ability of a molecule to accept electrons</p> Signup and view all the answers

    Which cellular process is primarily driven by the Proton Motive Force (PMF)?

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

    In anaerobic respiration, what serves as the alternative terminal electron acceptors?

    <p>Various molecules instead of oxygen</p> Signup and view all the answers

    What is the role of NADH and FADH2 in glucose oxidation via the TCA cycle?

    <p>Yielding reduced electron carriers</p> Signup and view all the answers

    What is the primary electron donor for nitrifiers in lithotrophy?

    <p>H2S</p> Signup and view all the answers

    Which of the following is a common product of dissimilatory denitrification?

    <p>N2</p> Signup and view all the answers

    What is the main function of bacteriorhodopsin in phototrophy?

    <p>Proton pump</p> Signup and view all the answers

    Which type of photosynthesis uses water as the electron donor?

    <p>Oxygenic photosynthesis</p> Signup and view all the answers

    Which inorganic molecule is NOT commonly used as an electron donor in lithotrophy?

    <p>H2O</p> Signup and view all the answers

    What is the primary photosynthetic pigment used by purple non-sulfur bacteria in anoxygenic photosynthesis?

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

    What is the process where energy capture occurs via ATP and NADH through electron transfer?

    <p>Redox reaction</p> Signup and view all the answers

    Which pathway involves the formation of sugars for biosynthesis?

    <p>Pentose Phosphate pathway</p> Signup and view all the answers

    What is the main end product of fermentation coupled to glycolysis?

    <p>Small organic acids</p> Signup and view all the answers

    In which process are NADH molecules oxidized to NAD to supply glycolysis for ATP formation?

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

    Which type of phosphorylation occurs in the Embden-Meyerhof-Parnas pathway?

    <p>Substrate level phosphorylation</p> Signup and view all the answers

    What defines the difference between lithotrophy and organotrophy?

    <p>Type of energy source used</p> Signup and view all the answers

    In photosynthesis, which process is utilized by a microorganism that has only PS II and occurs anaerobically?

    <p>Cyclic photophosphorylation</p> Signup and view all the answers

    What protective mechanisms do microorganisms use to minimize the toxic effects of oxygen?

    <p>Utilization of enzymes like SOD, catalase, peroxidase</p> Signup and view all the answers

    What type of microorganism thrives optimally when exposed to different parameters of pH, temperature, salinity, and pressure?

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

    What is the purpose of fluid thioglycollate medium in microbiology?

    <p>Enable differentiation between aerobes and anaerobes</p> Signup and view all the answers

    Which process in the nitrogen cycle results in greenhouse gas formation, particularly N2O?

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

    What stage of wastewater treatment involves the concept of activated sludge and saprophytes?

    <p>Secondary treatment</p> Signup and view all the answers

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