Intracellular Structures Of Procaryotes

Intracellular Structures Of Procaryotes

1. Plasma membrane

   • Structure
     • Phospholipid bilayer with protien embedded in and attached to the inner and outer surfaces
   • Functions
     • Selective permeable barrier
     • Synthesis cell wall components
     • Assist in DNA replication
     • Carries on respiration
     • Captures energy as ATP
   • Movement of materials
     • Passive process
       • Simple diffusion
       • Facilitated diffusion
       • Osmosis
     • Active process
       • Active transport
       • Group translocation

2. Cytoplasm

   • Contain water, enzymes, carbohydrates, lipids, inorganic ions
   • Thick, aqueous, semitransparent, elastic

3. Nucleoid

   • Single long circular molecule of double-stranded DNA
   • Location of chromosomes and associated protiens

4. Plasmid

   • Small circular, double-stranded DNA

5. RIbosomes

   • Sites of protein synthesis

6. Carboxysomes

   • Carbon dioxide fixation during photosynthesis

7. Magnetosomes

   • Protect cell against hydrogen peroxide accuulation

8. Gas vessicles

   • Consist of thin membrane surrounding a hallow space

9. Endospores

   • Formed by bacteria
   • For survival during adverse invironment