TOK Postcard - Cell Theory

IB Biology: TOK Postcard - Cell Theory

This is a problem of Perception. There is an interesting paradox here because measuring instruments have helped to extend human powers of perception enourmously in Biology. The problem is that if we cannot see something with our own eyes, because it is so small, how can we be sure that we are seeing what is really there when we use microscopes? Are knowledge claims from observations made directly with our senses more...


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