Lecture 19

Question 1

microbial ecology

Answer 1

• study of interactions of microorganisms with their environment with each other and with other organisms
• microbes live in diverse environments usually with other organisms
• their abundance and distribution is affected by the environment and in turn they also impact the environment

Question 2

how do microbes interact with their environment

Answer 2

• two component regulatory systems mediate physiological changes in response to environmental changes
• taxes : sensing environmental conditions and moving towards or away from attractants and repellants ex. chemotaxis, phototaxis, magnetotaxis
• endospore formation allow microbes to survive unfavorable conditions and persist until better conditions prevail
• quoram sensing: intracellular communication between microbes that enable cells to detect things like cell density and flow conditions to manage and coordinate group behaviors

Question 3

two component regulatory systems