Where are the star-shaped bacteria?

2 thoughts on “Where are the star-shaped bacteria?”

  1. My guess: if transport is limited by diffusion from a distance source to the general vicinity of the bacterium, you may not gain much by adding membrane surface area (starfish-like bacterium). In the lungs, air is moved by convection except over the last little bit, so you do gain by adding membrane surface area. It may boil down to the Peclet number.

    1. Good point — this makes sense for transport of gases or dissolved molecules. For simply having a large surface over which to have a membrane potential, like the mitochondria do, it’s not clear to me that diffusion would matter.

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