Question

Identify the inclusion bodies found in purple and green photosynthetic bacteria.
A. Cyanophycean granules
B. Gas vacuoles
C. Ribosomes
D. Both (1) and (2)

Answer 1

Inclusion bodies, of the termed elementary bodies, are aggregates of nuclear or cytoplasmic stable substances especially proteins. They represent sites of viral multiplication in a bacterium and consist of capsid proteins. Inclusion bodies can also indicate genetic diseases. Purple and green photosynthetic bacteria are capable of producing their own food.

Complete answer:
There are a few significant gatherings of photosynthetic microorganisms: cyanobacteria, purple microscopic organisms, green sulfur microbes, green nonsulfur microbes, heliobacteria, and acidobacteria.

Now, let’s have a look at the above-given options:
- The green microorganisms complete anaerobic photosynthesis and the green photosynthetic bacteria (cyanobacteria) are termed cyanobacteria so there is a difference in both.
- They utilize diminished particles, for example, H2, H2S, S, and natural atoms as an electron source and create ATP, NADH, and NADPH.
- The photosynthetic framework is situated in ellipsoidal vesicles called chlorosomes that are free of the cytoplasmic film.
- The purple microbes complete anoxygenic photosynthesis.
- They utilize diminished particles, for example, H2, H2S, S, and natural atoms as an electron source and produce ATP, NADH, and NADPH.
- The photosynthetic framework is situated in circular vesicles called chromatophores or lamellar layer frameworks that are persistent with the cytoplasmic film.
- Purple and green photosynthetic microorganisms, cyanobacteria, just as some other sea-going microscopic organisms, contain gas vacuoles.
- These are totals of empty protein chambers called gas vesicles that are porous to climatic gas, empowering the life form to manage lightness.
- Cyanobacteria contain cyanophycean granules that store nitrogen.

Hence, the correct answer is option (D).

Note: Some inclusion bodies are as follow:
- Certain bacteria produce volutin granules that store phosphate and sulfur granules that store sulfur. These are inorganic in nature.
- Other bacteria produce organic inclusion bodies either polyhydroxybutyrate granules or glycogen granules and use them as an energy reserve.