Question 12.
Based on the passage, which of the following statements BEST defines “quorum sensing” in bacteria?
A
Bacteria multiply only till they reach their required numbers.
B
Bacteria chat only when they are in groups.
C
Bacteria communicate only in numerical terms with others.
D
Bacteria do not communicate beyond certain numbers.
Question Explanation
Text ExplanationVideo Explanation
In the last paragraph, it is given that bacteria vote with signalling molecules, the vote gets counted, and if a certain threshold (the quorum) is reached, every bacterium responds. This is called quorum sensing. All bacteria use this sort of quorum sensing to communicate their cell number indirectly via signalling molecules.
Option A: The passage does not present the idea of multiplying being related to the current population.
Option B: "Chat" is something that is not in line with what is presented in the passage.
Option C: Communicating only in numerical terms can not be said to be true, and the definition of quorum sensing.
Option D: It is not clear whether they communicate beyond certain numbers. They signal only beyond a certain number.
Option E: This is the most appropriate description of the idea presented in the passage about bacteria responding in some manner when there are enough bacteria.
Therefore, Option E is the correct answer.
Option A: The passage does not present the idea of multiplying being related to the current population.
Option B: "Chat" is something that is not in line with what is presented in the passage.
Option C: Communicating only in numerical terms can not be said to be true, and the definition of quorum sensing.
Option D: It is not clear whether they communicate beyond certain numbers. They signal only beyond a certain number.
Option E: This is the most appropriate description of the idea presented in the passage about bacteria responding in some manner when there are enough bacteria.
Therefore, Option E is the correct answer.
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