The principal role of simple sugars (i.e. simple carbohydrates) in living organisms is to create cellular energy.
<h3>What are simple carbohydrates?</h3>
Simple carbohydrates (e.g. glucose, fructose) are a special class of macromolecules composed of only one monosaccharide unit, which serve as a source of energy for cellular respiration.
In conclusion, the principal role of simple sugars (i.e. simple carbohydrates) in living organisms is to create cellular energy.
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I'm pretty sure it's primary growth. I might not have studied this type of biology yet, but secondary growth would definitely not be the answer.<span />
Microvilli are the structures of fingerlike projections that greatly increase the absorbing surface of the cells.
<h3>What is Microvilli? </h3>
Microvilli are membrane protrusions that resemble fingers and are sustained by the actin cytoskeleton. They are present in practically all cell types. An increasing amount of research indicates that the highly curved membranes of the dynamic lymphocyte microvilli play a critical role in signal transduction that triggers immunological responses.
The examination of the process that generates curvature and its functional implications in signaling, however, was impeded by difficulties in altering local membrane curvature and tracking the high dynamicity of microvilli. Recent developments in adaptive super-resolution microscopy have helped to partially overcome these technological obstacles.
Therefore the structure that increases the absorbing surface area is called microvilli.
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