Virus

          Bacteriophage

          Capsid

          Nucleic acid

DNA Viruses

RNA Viruses

          Retrovirus

Kingdom Monera

          Cyanobacteria

Prokaryotic

Endospore

Heterotroph

Saprophytes

Autotroph

Binary fission

Coccus

Bacillus

Spirillum

Gram-negative bacteria

Gram-positive bacteria