Aerobic Fermentation Process

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Questions and Answers

What is the primary difference between aerobic fermentation and anaerobic fermentation?

  • Aerobic fermentation is faster than anaerobic fermentation.
  • Aerobic fermentation occurs in yeasts, while anaerobic fermentation occurs in bacteria.
  • Aerobic fermentation requires the presence of oxygen, while anaerobic fermentation occurs in the absence of oxygen. (correct)
  • Aerobic fermentation produces more energy than anaerobic fermentation.

Which term is commonly used to describe the phenomenon of aerobic fermentation in yeast?

  • Lactic acid production
  • Glycolysis
  • Crabtree effect (correct)
  • Alcoholic fermentation

Why does yeast require oxygen for certain processes essential for reproduction?

  • To enhance the flavor of the final product.
  • To establish a strong yeast colony. (correct)
  • To prevent the growth of bacteria.
  • To produce more alcohol during fermentation.

In which type of fermentation is oxygen not available in the surrounding environment?

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

Why do some types of fermentation processes require oxygen initially?

<p>To establish a strong yeast colony. (A)</p> Signup and view all the answers

What is the incorrect statement about aerobic fermentation based on the text?

<p>&quot;Aerobic&quot; means &quot;in the absence of oxygen.&quot; (A)</p> Signup and view all the answers

What is the byproduct produced during fermentation process under anaerobic conditions?

<p>Carbon dioxide (CO2) (A)</p> Signup and view all the answers

Which type of fermentation results in the production of ethanol and carbon dioxide?

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

Which type of lactic acid fermentation does not release gas as a byproduct?

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

Which organisms are responsible for transforming sugars into lactic acid during lactic acid fermentations?

<p>Leuconostoc, Streptococcus, Lactobacillus bacteria (B)</p> Signup and view all the answers

What is the most important compound resulting from lactic acid fermentation?

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

Which of the following is an example of an ancient lactic acid fermented food?

<p>Sour milk (B)</p> Signup and view all the answers

Which process uses oxygen to produce ATP?

<p>Oxidative phosphorylation (A)</p> Signup and view all the answers

What is the primary function of anaerobic fermentation?

<p>To regenerate NAD+ (A)</p> Signup and view all the answers

What is the key difference between anaerobic and aerobic respiration?

<p>Requirement of oxygen (C)</p> Signup and view all the answers

In anaerobic fermentation, what process restores NAD+ for glycolysis?

<p>Conversion of pyruvate to ethanol (D)</p> Signup and view all the answers

What type of phosphorylation is associated with substrate-level phosphorylation?

<p>Substrate-level phosphorylation (B)</p> Signup and view all the answers

Which enzyme catalyzes the conversion of pyruvate to acetaldehyde in ethanol fermentation?

<p>Pyruvate decarboxylase (B)</p> Signup and view all the answers

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