Microbiology of Soils
Which of the following is capable of oxidizing sulfur to sulfates?

Thiobacillus thiooxidans
Desulfotomaculum
Rhodomicrobium
Rhodospirillum

ANSWER DOWNLOAD EXAMIANS APP

Microbiology of Soils
A heterocyst is

the progenitor of cyanobacterial vegetative cells
a cell that carries out oxygenic photosynthesis
a type of spore
a terminally differentiated cell that fixes nitrogen

ANSWER DOWNLOAD EXAMIANS APP

Microbiology of Soils
Denitrification is

reduction of nitrate to organic nitrogen compounds
both (a) and (b)
changing of atmospheric nitrogen (N2) to nitrogen compounds
reduction of nitrate (NO3-) to nitrogen gas

ANSWER DOWNLOAD EXAMIANS APP