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Once a starter sequence has been initiated, it cannot be aborted, and must be permitted to complete its cycle

a.True
b.False

User Joshhunt
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Final answer:

The statement is False. Cell processes such as cycles initiated by bacteriophages can be altered or aborted in response to specific conditions. Cells can halt specific cycle sequences if necessary.

Step-by-step explanation:

The statement that 'once a starter sequence has been initiated, it cannot be aborted, and must be permitted to complete its cycle' is False. In the context of cell biology, the cell cycle can indeed be halted under certain conditions. For example, in the interaction between a bacteriophage and a host cell, the bacteriophage can exist in either of two cycles: the lytic cycle or the lysogenic cycle.

In the lytic cycle, the phage replicates and lyses the cell, releasing new phages. In the lysogenic cycle, the phage DNA incorporates into the host genome and can stay dormant. Environmental stress can lead to the prophage exiting the genome and entering the lytic cycle, demonstrating that the initial sequence can be 'aborted' and switched to another cycle in response to external conditions.

Additionally, during the cell cycle, if a cell does not meet all necessary parameters during each phase, it can halt the cycle. This flexibility is a crucial aspect of cellular regulation and response to the environment.

User Merle
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