  Organelles of optimum size are crucial for proper functioning of a living
cell. The cell employs various mechanisms for actively sensing and controlling
the size of its organelles. Recently Bauer et al have opened a new research
frontier in the field of subcellular size control by shedding light on the
noise and fluctuations of organelles of controlled size. Taking eukaryotic
flagellum as a model organelle, which is quite popular for such studies because
of its linear geometry and dynamic nature, Bauer et al have analysed the nature
of fluctuations of its length. Here we summarize the key questions and the
fundamental importance of the recent developments. Although our attention is
focussed here mainly on the experimental and theoretical works on eukaryotic
flagellum, the ideas are general and applicable to wide varieties of cell
organelle.
