You have isolated an aerobic gram-positive, endospore-forming bacterium that grows well on nutrient agar. to which of the following groups does it most likely belong? a) phototrophic bacteria b) gammaproteobacteria c) deltaproteobacteria d) bacillales e) can't tell

The right answer is Bacillales.

The Bacillales family includes the genus Bacillus which has endospores in its cytoplasm.

The endospore is formed in the cytoplasm when the environmental conditions are unfavorable (nutritive stress, desiccation, heat ...). The endospore allows the bacteria to survive these adverse conditions in a slower state of life (dormant state). The endospore thus represents a form of resistance but also a form of dissemination.

Clostridium, Bacillus, Sporosarcina are examples of bacteria that can sporulate.

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.