This document discusses the structure and classification of bacteria. It notes that bacteria are the simplest and smallest living organisms, and were first observed microscopically in 1676 and named in 1683. It then covers the different shapes bacteria can take including coccus, bacillus, spiral, vibrio and comma shapes. The document also outlines the outer structures of bacteria such as pili, capsule, cell wall and cell membrane, and internal structures including the mesosome, cytoplasm, ribosomes and nuclear material.

1. By Miss Rukhsana Hassan
Lecture # 1
Structure & Classification of bacteria

3.  Simplest and smallest living organisms.
 Microscopic
 LEEUWENHOEK 1676
 Name Bacteria 1683
 Luis Pasture----Bacteriology

4. Bacteria
Eubacteria Archeabacteria

5. Shapes of bacteria
coccus Bacillus Spiral vibrio comma

6. Coccus
Monococcus Diplococci Streptococci Staphylococci

8. Bacillus
Monobacillus Diplobacilli Streptobacilli Staphylobacilli

9. Diplobacilli
Streptobacilli
Staphylobacilli
Monobacillus

10. OUTER
•Pilli
•Capsule
•Cell wall
•Cell membrane

11. INNER
•Mesosome
•Cytoplasm
•Ribosome
•Nuclear material