BIO153H5 Lecture Notes - Lecture 11: Antimicrobial Resistance, Halobacterium, Genetic Recombination
Document Summary
Chapter 27 bacteria and archaea (pink color in salt rivers and lakes is caused mainly because of high salt concentrations) Halobacterium are among the most salt tolerant organisms on earth they strive on environments that kill cells. Structural and functional adaptations contribute to prokaryotic success. They are unicellular (eventhough cells of some might be attached even after division) Cells typically have (0. 5 -5 ameter) Hypertonic environment is where prokaryotes mostly get water from and shrink away from their wall. In contrast most bacterial cell walls contain peptidoglycan,(which is a polymer that is composed of modified sugars . Archeae cell walls contain peptidoglycan (which contains polymers, that have cocci-spherical, rod-shaped and spiral cells. Q1) identify and explain atleast 2 adaptations that enable prokaryotes to survive in environments too harsh for other organisms. Ans : adaptations include the capsule(shields prokaryotes from the host"s immune system).
