Okay, I have a species of humanoids who are 1 micrometer tall, when fully grown. They have the same exterior proportions as humans, but due to their small size, they don’t need internal organs as we know it. They have these thin, bone-like crystals in their bodies that retains shape while allowing mobility, as well as organelles that do the tasks that their bodies need to do. Would such a species of unicellular humanoids be plausible?
Why or why not?