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Which of the following statement is not correct?
- a)Recombinant technologies are used to produce desirable proteins
- b)Agrobacterium is a genus of bacteria that causes tumours in plants
- c)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cells
- d)Dolly, a sheep was the first animal to be cloned in 1997
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following statement is not correct?a)Recombinant technolo...
The statement that is not correct is:
3. Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cells.
Here's why:
Log phase (or exponential phase) is actually characterized by a rapid and significant increase in the number of cells. During this phase, cells are dividing at an exponential rate.
Lag phase is the initial phase where cells are adapting to new conditions and preparing for growth. During this phase, there is little to no significant increase in cell number as the cells are not yet dividing rapidly.
To summarize, the log phase is when cell multiplication is most rapid, not the lag phase.
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Community Answer
Which of the following statement is not correct?a)Recombinant technolo...
The correct answer is option C: "Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cells."
Explanation:
The growth of microorganisms, such as bacteria, typically follows a characteristic pattern known as the growth curve. This curve consists of several distinct phases, including the lag phase, log phase, stationary phase, and death phase.
1. Lag phase:
- The lag phase is the initial period of adjustment when microorganisms are introduced into a new environment.
- During this phase, cells adapt to the new conditions, synthesize necessary enzymes, and prepare for rapid growth.
- The length of the lag phase varies depending on the specific organism and environmental conditions.
- It is characterized by a slow or no increase in the number of cells.
2. Log phase (exponential phase):
- The log phase is the period of rapid cell division and exponential growth.
- During this phase, the cells multiply at their maximum rate under favorable conditions.
- The growth rate is constant, and the population size doubles in a fixed time interval.
- The log phase is the most metabolically active phase, with the highest rates of protein synthesis, DNA replication, and cell division.
3. Stationary phase:
- The stationary phase is reached when the growth rate slows down and the number of new cells being produced is balanced by the number of dying cells.
- This phase occurs when the available nutrients become limited, waste products accumulate, or other environmental factors change.
- The population size remains relatively constant during the stationary phase.
4. Death phase:
- The death phase occurs when the number of dying cells exceeds the number of new cells being produced.
- This phase is characterized by a decline in population size as cells die off.
In summary, the statement in option C is not correct because the log phase is the period of rapid cell division and exponential growth, while the lag phase is the period of adjustment with slow or no increase in the number of cells.
Explanation:
The growth of microorganisms, such as bacteria, typically follows a characteristic pattern known as the growth curve. This curve consists of several distinct phases, including the lag phase, log phase, stationary phase, and death phase.
1. Lag phase:
- The lag phase is the initial period of adjustment when microorganisms are introduced into a new environment.
- During this phase, cells adapt to the new conditions, synthesize necessary enzymes, and prepare for rapid growth.
- The length of the lag phase varies depending on the specific organism and environmental conditions.
- It is characterized by a slow or no increase in the number of cells.
2. Log phase (exponential phase):
- The log phase is the period of rapid cell division and exponential growth.
- During this phase, the cells multiply at their maximum rate under favorable conditions.
- The growth rate is constant, and the population size doubles in a fixed time interval.
- The log phase is the most metabolically active phase, with the highest rates of protein synthesis, DNA replication, and cell division.
3. Stationary phase:
- The stationary phase is reached when the growth rate slows down and the number of new cells being produced is balanced by the number of dying cells.
- This phase occurs when the available nutrients become limited, waste products accumulate, or other environmental factors change.
- The population size remains relatively constant during the stationary phase.
4. Death phase:
- The death phase occurs when the number of dying cells exceeds the number of new cells being produced.
- This phase is characterized by a decline in population size as cells die off.
In summary, the statement in option C is not correct because the log phase is the period of rapid cell division and exponential growth, while the lag phase is the period of adjustment with slow or no increase in the number of cells.
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Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer?.
Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer?.
Solutions for Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
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Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the following statement is not correct?a)Recombinant technologies are used to produce desirable proteinsb)Agrobacterium is a genus of bacteria that causes tumours in plantsc)Log phase does not show any significant increase in the number of cells whereas the lag phase shows rapid multiplication of cellsd)Dolly, a sheep was the first animal to be cloned in 1997Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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