Pointers

  1. Home
  2. Free Resources
  3. Pointers
  4. 4465
TLS Online TPP Program

#Id: 4465

Cryoelectron microscopy allows examination of hydrated, unfixed, and unstained specimens in the TEM by maintaining them at -196oC (liquid nitrogen).


#Unit 13. Methods in Biology #Electron Microscopy #Part B Pointers
PYQ Links
  1. PYQ 1
Extensive Links
  1. Link 1
More Pointers
TLS Online TPP Program

#Id: 539

#Unit 2. Cellular Organization

Helical bacteria with: 
1. Less than one turn- vibrioid shape
2. Complete turn- helical shape
TLS Online TPP Program

#Id: 540

#Unit 2. Cellular Organization

Protein filaments in cytoplasm are responsible for the rod and helical cell shapes of bacteria.
TLS Online TPP Program

#Id: 541

#Unit 2. Cellular Organization

Flagella may be:
1. Peritrichous
2. Monotrichous 
3. Lophotrichous
4. Amphitrichous 
TLS Online TPP Program

#Id: 542

#Unit 2. Cellular Organization

Hook and filament are composed of monomeric subunits (flagellin) arranged in a helical fashion. 
TLS Online TPP Program

#Id: 543

#Unit 2. Cellular Organization

Glycocalyx is a viscous polymer that is external to the cell wall and composed of polysaccharide, polypeptide, or both. For example: Bacillus anthracis produces a capsule of D-glutamic acid
TLS Online TPP Program

#Id: 544

#Unit 2. Cellular Organization

Capsules often protect pathogenic bacteria from phagocytosis by the host cells.