Question

What are the photosynthetic pigments of bacteria?

Answer 1

Photosynthesis is the process through which electromagnetic radiation is transformed into chemical energy and used by green plants and photosynthetic bacteria to convert carbon dioxide and water into carbohydrates and oxygen.
Photosynthesis is a light-driven oxidation-reduction reaction in which light energy is utilised to oxidise water, releasing oxygen gas and hydrogen ions, and then electrons are transferred to carbon dioxide, reducing it to organic molecules.

Complete answer:
In photosynthetic organisms, photosynthetic pigments are molecules that absorb electromagnetic radiation and transport the energy of the absorbed photons to the reaction centre, resulting in photochemical reactions.
Photosynthetic pigment molecules are found all over the place and are always made up of chlorophylls and carotenoids.
Bacteriochlorophyll is a kind of chlorophyll found in bacteria. This kind of chlorophyll is only found in bacteria. Phycobiliproteins, a water-soluble photopigment, are also used by most cyanobacteria species.
In addition to chlorophyll, photosynthetic systems also contain pheophytin (bacteriopheophytin in bacteria), which is important for electron transfer in photosynthetic systems.
Phycobilins, such as phycoerythrobilin and phycocyanobilin, are light-harvesting pigments used by cyanobacteria and red algae.
Bacteriorhodopsin is another type of photosynthetic pigment found specifically in halobacteria.
It's made of a protein with a retinal prosthetic group connected to it.
The absorption of light photons by this pigment causes a conformational change in the protein, which results in the expulsion of protons from the cell.

Note:
Importance of photosynthesis-
Autotrophs use carbon dioxide, sunshine, and photosynthetic pigments to generate their food, and photosynthesis is their principal source of energy.
Heterotrophs, who get their energy from autotrophs, need photosynthesis just as much as autotrophs.
Plant photosynthesis is required to keep oxygen levels in the atmosphere stable.