Helical heterotrophs bacteria spiraling through environment are called……
a) chlamydias
b) delta proteobacteria
c) gram-positive bacteria
d) spirochetes
Glycocalyx is ……..
a) gram-negative bacteria
b) loose capsule
c) invaginated cell membrane
d) appendeges
An extra-chromosomal DNA ring in bacteria is called……..
a) nucleoid
b) plasmid
c) pili
d) mesosome
In photoautotrophic bacteria the source of hydrogen in photosynthesis is……..
a) H2O
b) H2S
c) H2O2
d) H2SO4
In bacteria fastest growth occurs in the phase called…….
a) log phase
b) lag phase
c) stationary phase
d) decline phase
The reproduction in which the genetic material is transmitted from a donor to a recipient bacterium through a phage is called…….
a) transformation
b) binary fission
c) transduction
d) conjugation
