Krebs Cycle and Metabolism Quiz

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Questions and Answers

Which bacteria species is associated with heterolactic fermentation?

  • Clostridium acetobutylicum
  • Leuconostoc mesenteroides (correct)
  • Escherichia coli
  • Zymomonas sp.

In which fermentation process is lactate produced from glucose?

  • Propionate fermentation
  • Mixed acid fermentation (correct)
  • Ethanolic fermentation
  • Butyric acid fermentation

Which bacteria species is involved in propionate fermentation?

  • Pelobacter acetylenicus
  • Propionibacterium freudenreichii (correct)
  • Propionigenium modestum
  • Providencia rettgeri

Which of the following organisms is associated with butyric acid fermentation?

<p>Clostridium sporogenes (A)</p> Signup and view all the answers

Which bacteria species is linked to lactic acid fermentation?

<p>Lactobacillus acidophilus (D)</p> Signup and view all the answers

Which type of fermentation results in the production of propionate?

<p>Stickland reaction (B)</p> Signup and view all the answers

Which of the following is a key characteristic of heterolactic fermentation?

<p>Produces a mixture of ethanol, lactic acid, and acetic acid (D)</p> Signup and view all the answers

Which of the following is the primary electron acceptor in lactic acid fermentation?

<p>NAD+ (B)</p> Signup and view all the answers

Which of the following is a key characteristic of mixed acid fermentation?

<p>Generates a mixture of lactic acid, acetic acid, formic acid, and sometimes ethanol (D)</p> Signup and view all the answers

Which of the following is a key characteristic of propionate fermentation?

<p>Generates propionate, acetate, and carbon dioxide as the primary end products (C)</p> Signup and view all the answers

Which of the following is a key characteristic of butyric acid fermentation?

<p>Generates butyric acid, acetic acid, and hydrogen gas as the primary end products (C)</p> Signup and view all the answers

Which of the following is the primary electron acceptor in ethanol fermentation?

<p>NAD+ (B)</p> Signup and view all the answers

Which of the following fermentation processes is characterized by the production of both lactic acid and ethanol?

<p>Heterolactic fermentation (A)</p> Signup and view all the answers

In which fermentation process is propionic acid the major end product?

<p>Propionate fermentation (B)</p> Signup and view all the answers

Which fermentation process is commonly associated with the production of sauerkraut and other fermented vegetables?

<p>Lactic acid fermentation (B)</p> Signup and view all the answers

In which fermentation process are butyric acid and acetic acid the major end products?

<p>Butyric acid fermentation (A)</p> Signup and view all the answers

Which fermentation process is characterized by the production of multiple organic acids, including lactic acid, acetic acid, and formic acid?

<p>Mixed acid fermentation (C)</p> Signup and view all the answers

Which fermentation process is commonly used in the production of certain cheeses, such as Swiss cheese?

<p>Propionate fermentation (A)</p> Signup and view all the answers

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