Quiz on Alphaproteobacteria Characteristics

Which genus of Alphaproteobacteria is known for causing tumors in plants?

• Bartonella

• Agrobacterium

• Brucella

• Caulobacter

What is the microscopic morphology of Bartonella?

• Gram-positive bacillus

• Gram-negative, pleomorphic, flagellated coccobacillus

• Gram-negative bacillus

• Gram-positive, flagellated coccobacillus

Which disease is caused by Brucella in humans?

• Trench fever

• Cat scratch disease

• Brucellosis

• Plant tumors

Caulobacter is used in studies on cellular adaptation and differentiation due to its:

• Ability to fix nitrogen

• Peculiar life cycle forming “swarm” and “stalked” cells

• Transmission by lice and fleas

• Plant pathogenicity

Rhizobium forms a symbiotic relationship with the roots of which type of plants?

• Grasses

• Legumes

• Conifers

• Ferns

Which genus of Alphaproteobacteria is transmitted by lice and fleas?

• Agrobacterium

• Bartonella

• Brucella

• Caulobacter

What is the primary transmission method of Brucella to humans?

• Lice and fleas

• Contaminated milk from infected cows

• Soil contact

• Airborne particles

Which genus of Alphaproteobacteria is known for nitrogen fixation?

• Agrobacterium

• Bartonella

• Rhizobium

• Rickettsia

Agrobacterium is classified as which type of bacteria?

• Gram-positive bacillus

• Gram-negative bacillus

• Gram-positive coccobacillus

• Gram-negative coccobacillus

Which genus of Alphaproteobacteria is used in studies due to its unique life cycle?

• Bartonella

• Caulobacter

• Brucella

• Rhizobium