In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

To make this molecule, bactoprenol chauffeurs N-acetylglucosamine and N-acetylmuramic acid through a membrane. Lysozyme continually breaks its NAG-NAM connections, while penicillin binds to proteins that provide cross-links between strands, and thus causes the cell to lyse when it tries to reproduce. Gram negative bacteria use lipoprotein anchors to hold it to the outer membrane, while Gram positive bacteria are surrounded by about forty layers of this molecule, which is also known as murein. FTP, name this polymer that makes up prokaryotic cell walls.
Science