: All prokaryotes lack a nucleus but feature a nucleoid, ribosomes, and a plasma membrane; most possess a complex peptidoglycan cell wall.
Prokaryotes (Bacteria and Archaea) are the most diverse organisms on Earth, possessing unique biochemical pathways and physiological adaptations that allow them to thrive in environments ranging from deep-sea vents to the human gut. Their physiology centers on how these single-celled organisms solve physical and chemical problems to grow, while their biochemistry explores the molecular mechanisms—such as enzyme function and metabolic flux—that sustain life. Key Physiological & Biochemical Themes Physiology and Biochemistry of Prokaryotes
Mechanisms for moving nutrients and proteins across membranes. Evolutionary relationships between Bacteria and Archaea. : All prokaryotes lack a nucleus but feature
: Survival is driven by the proton motive force and membrane-bound electron transport chains that facilitate oxidative phosphorylation. Key Physiological & Biochemical Themes Mechanisms for moving