Intracellular structures of Prokaryotes

Intracellular Structures

Inclusions

Cytoplasm

Plasma Membrane

Plasma membrane

Cytoplasm

The Nuclear area

Inclusions

Endospore

Phospholipid bilayer of membrane

Phospholipid molecule in bilayer

Plasma membrane in cell

The Movement of Materials across membranes

Functions

Selectively permeable barrier

Synthesizes cell wall components

Assists in DNA replication

Carries on respiration

Captures energy as ATP

Passive process

Active process

Facilitated Diffusion

Osmosis

Simple Diffusion

Group Translocation

Active Transport

The Nuclear Area

Intracytoplasmic Membranes

Ribosomes

Endospore

About 80% water

Major structures are DNA, ribosomes and inclusions

Thick, aqueous and elastic

70S ribosomes (Svedberg)

Single long circular molecule of double-stranded DNA

Plasma membrane infoldings

Anammoxomes in Planctomycetes

Doesnt include histones

Bacterial chromosomes are not surrounded by nuclear envelope

Sites of protein synthesis

Each subunit contain RNA and rRNA

Small subunit(30S) + Large subunit(50S)

Sulfur granules

Carboxysomes

Lipid inclusions

Magnetosomes

Polysachharide granules

Gas Vacuoles

Metachromatic granules

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