What does this mean? "there is a lot more to science than what is observed on the surface."

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that

How can you tell the difference between rough er from smooth er?