Bacteria and Archaea Flashcards
Invariably have a nuclear material and aren’t complex membrane-bound organelles
Bacteria and Archaea
The inclusions
Bacterial Cells
Simple
Two-dimensional
Ordinary Microscope
Three-dimensional
Rod-shaped
Electron Microscope
Functions of the Bacteria
Reproduction
Metabolism
Nutrient Processing
Sizes of the Bacteria
Average
Thiomargarita Magnifica / Largest
Smallest
1 um
Average
750 um
Thiomargarita Magnifica / Largest
200-500 um
Smallest
Shapes of the Bacteria
Coccus
Bacillus
Curved
Spherical / Ball-shaped
Coccus
Blocky / Spindle-shaped
Bacillus
General
Curved
Short and plumped
Coccobacillus
Gently curved
Vibrio
Curled or spiral-shaped cylinder
Spirillum
Flexible
Spirochete
Lacks on Cell Wall
Mycoplasmas
Intended variation of cell shape and sizes
Pleomorphism
Arrangements
Single
Double
Tetrads
Irregular Clusters
In Chains
Sacrina
1 / Cocci
Single
2 / Diplocci
Double
4
Tetrads
Small / Staphylococci or Micrococci
Irregular Clusters
Big / Streptococci
In Chains
8, 16, etc.
Sacrina
1 / Bacci
Single
2 / Diplobacci
Double
Big / Streptobacci
In Chains
Microbial habitats with access to food, water, atmosphere, and others
Biofilms
Single-cell
Planktonic
Substances attraction
Colonists
Damaged heart valves
Hard surfaced teeth
Affinity for numerous implanted medical devices
Serious Medical Implications
The outer surface
External Structures
Accessory structures sprout from surface of Bacteria
Appendages
Two Types of Appendages
Provides the needed motility
Provides attachment points or channels
Free / thorough
Flagellum
Three Parts of Flagellum
Filament
Hook
Basal Body
Helical structure composed of proteins
Filament
Anchor
Hook