Bacteria

Nota:

• conditions of the body is not suitable for it to survive.  unsuitble pH or wrong temperature 
• if ingested with food usually it will be killed by stomach acid 

1. milk-souring bacteria

   Nota:

   • help in the breakdown of milk in the stomach by renin 
2. in the large intestine

   Nota:

   • contribute to the final formation of faces 
   • some of the intestinal bacteria are dangerous if allowed to multiply on food 

1. Feed on the tissue of the body
2. cause disease by reproducing rapidly in the body and producing poisonous toxins
3. result of
   1. unhygienic conditions
   2. Direct contact with infected people

Nota:

• Float freely in the cell

Nota:

• loose gelatinous sheath 
• deposit around the bacterial cell wall
• provides protection

1. capsul

   Nota:

   • when the slime layer become thick  it forms capsule
   • for protection 

Nota:

• provide specific shape and protection
• prevents cell from swelling and bursting due to osmotic changes
• composed of polysaccharide and protein 

Nota:

• extends outward of the cell 
• long ,slender, thread like structure 
• help in locomotion 
• composed of protein flagellin 
• Directly attached th the plasma membrane and not covered by any sheath