A Quiz On Microbial Growth

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| By Mokrysalimi

Mokrysalimi

Community Contributor

Quizzes Created: 1 | Total Attempts: 5,165

Questions: 15 | Attempts: 5,195 | Updated: Aug 22, 2023

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Microbes are all around the environment, and their infectious ability also regulates human life. Play this informative quiz on microbial growth and see how well you know the topic. This quiz contains questions that cover various aspects of microbiology and other biochemical processes that will enhance your knowledge base. Play the quiz to know more and answer the questions asked in the quiz. If you like the quiz, do share it with your friends and family. All the best!

Questions and Answers

1.

Which is the following the main requirement(s) for the bacteria to grow?
- A.
  
  Oxygen requirement
- B.
  
  Nutrient requirement
- C.
  
  Oxygen and nutrient requirement
- D.
  
  Physical and chemical requirement
Correct Answer
D. Physical and chemical requirement

Explanation
physical and chemical requirement are the basic/main requirement required by the bacteria to grow whereas the other is just an example of physical and chemical requirement.

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2.

Psychrophiles are those bacteria that able to grow under........
- A.
  
  0 – 20ºC
- B.
  
  25 – 40ºC
- C.
  
  50 – 60 ºC
- D.
  
  70 – 110 ºC
Correct Answer
A. 0 – 20ºC

Explanation
Mesophiles : 25 – 40ºC
Moderate thermophiles : 50 – 60 ºC
Extreme thremophiles : 70 – 110 ºC

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3.

Osmosis is one of the processes in passive transportation. What is the movement of the water when there's high solute concentration outside the cell?
- A.
  
  Water move from inside to outside cell
- B.
  
  Water move from outside to inside cell
- C.
  
  There's no net movement of water molecules.
- D.
  
  None of the above
Correct Answer
A. Water move from inside to outside cell

Explanation
Osmosis is the net movement of water molecules from the high concentration gradient to lower concentration gradient ?

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4.

Chemical growth requirements essential for microorganism growth is.
- A.
  
  Water only
- B.
  
  Environmental waste.
- C.
  
  Product from other bacterial waste
- D.
  
  Water,carbon,oxygen,phosphorus,Nitrogen,sulfur and trace element
Correct Answer
D. Water,carbon,oxygen,phosphorus,Nitrogen,sulfur and trace element

Explanation
Basically,microorganism required water,carbon,oxygen,phosphorus,Nitrogen,sulfur and trace element in order for them to grow on a particular environment.

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5.

Microorganism obtained their carbon source from the carbon dioxide are called?
- A.
  
  Chemotroph
- B.
  
  Autotroph
- C.
  
  Heterotroph
- D.
  
  Saprophyte
Correct Answer
B. Autotroph

Explanation
Autotroph obtain their carbon source from the carbon dioxide.

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6.

Microorganisms obtain their carbon source in many different ways. Those that able to get the carbon source from the organic compound are called?
- A.
  
  Autotroph
- B.
  
  Chemotroph
- C.
  
  Heterotroph
- D.
  
  Organotroph
Correct Answer
C. Heterotroph

Explanation
Heterotroph get their carbon source from the organic compound.

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7.

Mac Conkey’s agar is a differential media that contains lactose as substrate and neutral red as an indicator. This agar is used to
- A.
  
  Differentiate lactose fermenters from non-lactose fermenters
- B.
  
  Differentiate sucrose fermenters with non-sucrose fermenters bacteria.
- C.
  
  Differentiate glucose fermenters with non - glucose fermenters
- D.
  
  Identify the bacteria that able to degrade peptone into amino acid.
Correct Answer
A. Differentiate lactose fermenters from non-lactose fermenters

Explanation
Bacteria that able to ferment lactose in Macconkey agar plate will give red colour on the growth.

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8.

Bacteria mainly grow via binary fission. Some can grow by
- A.
  
  Budding only
- B.
  
  Spores only
- C.
  
  Budding,spores, or fragmentation
- D.
  
  None of the above
Correct Answer
C. Budding,spores, or fragmentation

Explanation
Some bacteria able to grow via budding,spores or fragmentation

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9.

Organisms do not increase significantly in number and produce large quantities of energy in the form of ATP. Which of the phase in the exponential growth curve explains these statements?
- A.
  
  Lag phase
- B.
  
  Stationary phase
- C.
  
  Log phase
- D.
  
  Decline phase
Correct Answer
A. Lag phase

Explanation
In lag phase, organisms do not increase significantly in number and produce large quantities of energy in the form of ATP

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10.

What are the factor that shifting the phase to the decline phase ?
- A.
  
  Condition in the medium become less but cell still have the ability to divide rapidly
- B.
  
  Condition in the medium become less and cell lose their ability to divide
- C.
  
  Number of live cells increases at a logarithmic rate
Correct Answer
B. Condition in the medium become less and cell lose their ability to divide

Explanation
Condition in the medium become less because there are too many competition to get the limited nutrient and on top of that, many side product produce by the microorganism cause the condition become unfavorable to grow.So,when this occur,cell will lose their ability to divide and eventually the organism will die.

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11.

Growth are referring to the number of cells, not the size.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The increasing of bacterial size does not show the increasing of bacterial growth.

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12.

Tolerance referring to the survival of bacteria under conditions in which they cannot grow.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Tolerance refers to the ability of bacteria to survive under conditions in which they cannot grow. This means that even though the bacteria may not be able to reproduce or thrive, they are still able to survive in these unfavorable conditions. Therefore, the statement "Tolerance referring to the survival of bacteria under conditions in which they cannot grow" is true.

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13.

Selective media contain agents that inhibit the growth of certain bacteria while permitting the growth of other.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Selective media are specifically formulated to promote the growth of certain types of bacteria while inhibiting the growth of others. These media contain substances such as antibiotics, dyes, or chemicals that create an environment unfavorable for the growth of certain bacteria. By selectively inhibiting the growth of unwanted bacteria, selective media allow for the isolation and identification of specific bacterial species or groups. Therefore, the statement that selective media contain agents that inhibit the growth of certain bacteria while permitting the growth of others is true.

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14.

Blood agar is unable to cultivate the fastidious microorganisms
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Blood agar able to cultivate all the fastidious microorganism

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15.

Aseptic technique refers to carry out a procedure under controlled conditions in a manner that will minimize the chance of contamination.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Aseptic technique is a method used to perform procedures in a way that reduces the risk of contamination. This means that the procedure is carried out under controlled conditions, such as using sterile equipment and maintaining a sterile environment. By following aseptic technique, the chances of introducing harmful microorganisms into the procedure are minimized, ensuring a safer and more effective outcome. Therefore, the statement that aseptic technique refers to carrying out a procedure under controlled conditions to minimize contamination is true.

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Current Version
Aug 22, 2023

Quiz Edited by
ProProfs Editorial Team
Oct 17, 2014

Quiz Created by
Mokrysalimi

A Quiz On Microbial Growth

Which is the following the main requirement(s) for the bacteria to grow?

Psychrophiles are those bacteria that able to grow under........

Osmosis is one of the processes in passive transportation. What is the movement of the water when there's high solute concentration outside the cell?

Chemical growth requirements essential for microorganism growth is.

Microorganism obtained their carbon source from the carbon dioxide are called?

Microorganisms obtain their carbon source in many different ways. Those that able to get the carbon source from the organic compound are called?

Mac Conkey’s agar is a differential media that contains lactose as substrate and neutral red as an indicator. This agar is used to

Bacteria mainly grow via binary fission. Some can grow by

Organisms do not increase significantly in number and produce large quantities of energy in the form of ATP. Which of the phase in the exponential growth curve explains these statements?

What are the factor that shifting the phase to the decline phase ?

Growth are referring to the number of cells, not the size.

Tolerance referring to the survival of bacteria under conditions in which they cannot grow.

Selective media contain agents that inhibit the growth of certain bacteria while permitting the growth of other.

Blood agar is unable to cultivate the fastidious microorganisms

Aseptic technique refers to carry out a procedure under controlled conditions in a manner that will minimize the chance of contamination.