The eternal struggle between textbook expectations and microscope reality. Teachers show us these gorgeous, colorful cell illustrations that look like they were designed by Pixar, then expect us to identify the same structures in what's essentially a yellow blob with texture issues.
Then we draw what we actually saw - a circle with another circle inside it - and label it with whatever cellular components we memorized from chapter 4. The professor marks it "excellent observation skills" because they can't see anything in that yellow smudge either.