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Microbiology - Lecture Twenty Nine : Microbes and energy flow

Q: What is the difference between Non-cyclic photophosphorylation and Cyclic photophosphorylation ?

NON-CYLIC : Electrons flow from H2O --> PSII --> PSI --> NADP+ Generate o2, ATP and NADPH CYCLIC : PSI can work in absence of PSII Generates ATP but no O2 (anoxygenic)

5 important questions on Microbiology - Lecture Twenty Nine : Microbes and energy flow

Define the term Microbial ecology

Microbial world is huge, and that there is more that they don’t know, than what they do

Microbial Ecology: The study of the interrelationships among microorganisms and their environment.
Microbiome: ALL MICROORGANISMS and their genes in a particular environment.
Enrichment culture: Providing the conditions that suit the thriving of particular organisms.
Mesocosm: An experimental system that aims to match real life.

What are the basic components of microbial metabolism, energy and carbon acquisition ?

Metabolism describes the biochemical processes that occur within a living organism.
Breakdown of food and its transformation into energy.
It consists of catabolism (breakdown to substances) and anabolism (building of substances)

What are the 4 key trophic groups of microorganisms ?

An autotroph (producer) is an organism that produces its own energy using sunlight or chemical energy. They get their carbon source from CO2.
A heterotroph (consumer) is an organism that consumes another organism for energy. They get their carbon source from “food”.
Chemotroph oxidises inorganic chemicals for energy
Phototrophs capture light which they use for energy.