Fermentation Kinetics

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Q. In fermentation kinetics, what does the term 'lag phase' refer to?
  • A. Rapid growth phase
  • B. Adaptation period
  • C. Stationary phase
  • D. Decline phase
Q. What is the effect of increasing substrate concentration on fermentation rate?
  • A. Increases indefinitely
  • B. Decreases
  • C. Increases to a point then levels off
  • D. Has no effect
Q. What is the main product of lactic acid fermentation?
  • A. Ethanol
  • B. Carbon dioxide
  • C. Lactic acid
  • D. Acetic acid
Q. What is the primary substrate used in fermentation processes?
  • A. Glucose
  • B. Lactate
  • C. Ethanol
  • D. Acetate
Q. What is the role of enzymes in fermentation?
  • A. Increase temperature
  • B. Catalyze reactions
  • C. Consume substrates
  • D. Produce waste products
Q. What is the significance of the 'maximum specific growth rate' in fermentation?
  • A. Indicates the fastest growth rate
  • B. Determines substrate concentration
  • C. Measures product yield
  • D. Indicates fermentation duration
Q. Which factor does NOT significantly affect fermentation rate?
  • A. Temperature
  • B. pH
  • C. Oxygen concentration
  • D. Color of the substrate
Q. Which microorganism is commonly used in alcoholic fermentation?
  • A. Escherichia coli
  • B. Saccharomyces cerevisiae
  • C. Lactobacillus
  • D. Bacillus subtilis
Q. Which of the following is a byproduct of alcoholic fermentation?
  • A. Lactic acid
  • B. Ethanol
  • C. Acetic acid
  • D. Carbon dioxide
Q. Which type of fermentation occurs in muscle cells during intense exercise?
  • A. Alcoholic fermentation
  • B. Lactic acid fermentation
  • C. Acetic acid fermentation
  • D. Butyric acid fermentation
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