Describe the following terms in details...a) mesosomes. b) inclusion bodies c) ribosomes......! good luck ✌
Answers
Answer
a) Mesosomes are the characteristic circular to viliform specialization of cell membrane of bacteria that develops as in growth from the plasma membrane. It contains respiratory enzymes.
b) Inclusion bodies are generally diverse intracellular non membranous structures that stores food reserves, nutrients etc.
c) Ribosomes are the cell organelles which synthesises protein. They can be 70s and 80s.
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Mesosome (extension of Plasma Membrane)
These extensions are in the form of vesicles, tubules and Lamellae.
They help in cell wall formation, DNA replication and distribution to the daughter's cells.
They also help in Respiration and Secretion.
Additional Points
Filamentous Extension in Bacteria - this extension is known as Flagella. it has three parts listed below :-
- Filaments
- Hook
- Basal Body
Pilli - these are elongated tubular structure made from a special protein.
Fimbrine - these are small Bristol like fibres sprouting out of the cell, play role in adhesion.
Ribosomes and Inclusion Bodies
Ribosome are discovered by George Palade, composed of RNA and proteins and not surrounded by any membrane.
Every ribosome has two subunits :-
- Smaller Unit (30s)
- Large Unit (50s)
There are various ribosomes attached to the single mRNA to form a chain structure called polysome.
Detain materials are stored in the form of inclusion bodies.
Paschen bodies, Glycogen granules, Phosphate granules are some example of inclusion bodies.