Various types of bacteria According to the text: “Prokaryotes…have relatively simple structures”. Not really. That older view is changing rapidly as more and more complex structures are unveiled inside prokaryotes. Figure 1-7

An example of a simple organelle in many bacteria The carboxysome: An example of a simple organelle in many bacteria A single cyanobacterial cell (about to divide). Several carboxysomes are visible

Function of the carboxysome: CO2 fixation is enhanced by encapsulating together two enzymes that act in sequence, CA (carbonic anhydrase), which produces CO2, and RuBisCO, which uses it as a substrate

Atomic Structure, Assembly, and Transport in Bacterial Microcompartments BMC shell protein assembly Transport through pores