Bacterial nutrition and growth (Lec 2) (Set 1)
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Questions and Answers

Which type of bacteria grows best between 20-40 °C?

  • Psychrophiles
  • Thermophiles
  • Mesophiles (correct)
  • Hyperthermophiles
  • What is the temperature range in which hyperthermophiles grow best?

  • Above 80 °C (correct)
  • 45-80 °C
  • 20-40 °C
  • Below 15 °C
  • Which type of bacteria requires oxygen for growth?

  • Aerotolerant anaerobes
  • Obligate anaerobes
  • Facultative anaerobes
  • Obligate aerobes (correct)
  • Which type of bacteria can grow with or without oxygen?

    <p>Facultative anaerobes</p> Signup and view all the answers

    Which type of bacteria grows best in alkaline habitats?

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

    Which type of bacteria grows best below 15 °C and cannot grow above 20 °C?

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

    Which type of bacteria can grow in the presence or absence of oxygen?

    <p>Facultative anaerobes</p> Signup and view all the answers

    Which type of bacteria grows best in acidic habitats?

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

    Which type of bacteria requires high salt concentration for growth?

    <p>Extreme halophiles</p> Signup and view all the answers

    What is the temperature range in which thermophiles grow best?

    <p>45-80 °C</p> Signup and view all the answers

    Which of the following is a macroelement required for bacterial growth?

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

    Which of the following is a microelement required for bacterial growth?

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

    Which of the following is a component of complex media used for bacterial growth?

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

    Which of the following is a method for measuring bacterial growth?

    <p>Counting bacterial by microscopy</p> Signup and view all the answers

    What is the term used to describe the time needed for a bacterial population to double in size?

    <p>Doubling time</p> Signup and view all the answers

    Which of the following is true about viable but nonculturable bacteria?

    <p>They are in a state of very low metabolic activity and do not divide</p> Signup and view all the answers

    Which of the following is NOT a factor that can affect bacterial growth?

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

    Which of the following is true about facultative anaerobes?

    <p>They can grow with or without oxygen</p> Signup and view all the answers

    Which of the following is the correct temperature range for mesophiles?

    <p>20-40 °C</p> Signup and view all the answers

    Which of the following is true about hyperthermophiles?

    <p>They grow best above 80 °C</p> Signup and view all the answers

    True or false: Bacteriolytic agents inhibit bacterial growth by lysing bacterial cells.

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

    True or false: Mesophiles are bacteria that grow best below 15 °C and cannot grow above 20 °C.

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

    True or false: Acidophiles are bacteria that grow best in alkaline habitats.

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

    True or false: Hyperthermophiles can grow at temperatures above 80 °C.

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

    True or false: Halophiles are bacteria that grow in habitats with high salt concentration.

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

    True or false: Oxygen is required for the growth of obligate anaerobes.

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

    True or false: Psychrophiles can grow above 20 °C.

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

    True or false: Acidophiles grow best in alkaline habitats.

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

    True or false: Hyperthermophiles can grow at temperatures below 80 °C.

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

    True or false: Halophiles require high salt concentration for growth.

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

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