Recommend David Chalmer's writings on consciousness. He's a philosopher with a good understanding of the underlying science.
If it is true that consciousness is a reflection of some as of yet undescribed biological or bio-physical process, it's still not clear what it is.
It's a category mistake to suppose consciousness is "made up of" some elementary stuff, as if it were a material substance. Clearly it is not.
Even still, we recognize some atomic structure in consciousness in the form of qualia and distinct sensations. However, "consciousness is" is always "consciousness of" in the sense that philosophers have argued until they are blue in the face that one of the necessary and sufficient properties of a conscious state is its intentionality--what it points to, its object.
Conscious activity is best thought of as existing for some adaptive purpose. That purpose is to summarize the information in the brain, which is too much for the agent to tally on its own. Consciousness bottlenecks and dripfeeds the huge parallelized activity of the brain into a focused lens containing only the points that important to biological survival and reproduction or closely related reinforcers.
