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Intracellular structures of Prokaryotes (Inclusions (Sulfur granules,…
Intracellular structures of Prokaryotes
Intracellular Structures
Plasma membrane
Cytoplasm
The Nuclear area
Inclusions
Endospore
Inclusions
Sulfur granules
Carboxysomes
Lipid inclusions
Magnetosomes
Polysachharide granules
Gas Vacuoles
Metachromatic granules
Cytoplasm
About 80% water
Major structures are DNA, ribosomes and inclusions
Thick, aqueous and elastic
Plasma Membrane
Phospholipid bilayer of membrane
Phospholipid molecule in bilayer
Plasma membrane in cell
Functions
Selectively permeable barrier
Synthesizes cell wall components
Assists in DNA replication
Carries on respiration
Captures energy as ATP
The Movement of Materials across membranes
Passive process
Facilitated Diffusion
Osmosis
Simple Diffusion
Active process
Group Translocation
Active Transport
The Nuclear Area
Single long circular molecule of double-stranded DNA
Doesnt include histones
Bacterial chromosomes are not surrounded by nuclear envelope
Intracytoplasmic Membranes
Plasma membrane infoldings
Anammoxomes in Planctomycetes
Ribosomes
70S ribosomes (Svedberg)
Sites of protein synthesis
Each subunit contain RNA and rRNA
Small subunit(30S) + Large subunit(50S)
Endospore
Structures formed by bacteria for survival during adverse environmental conditions
Bacterial endospore
Sub-terminal
Center
Terminal
Cannot be destroyed easily
Highly resistant differentiated bacteria cell
Formed internal to the bacterial cell membrane
