Question

Bacteria can be classified by shape. For the following bacteria species, give their basic bacterial shape.

Answer 1

Streptococcus pyrogenes : Round (or) Ovoid

Paenibaccilus polymyxa:

Aquaspirillum bengal: Helical

Explanation:

• Streptococcus pyogenes are gram positive, Round shaped, Anaerobic growth bacteria, Non-motile bacteria.
• Aquaspirillum bengal is helical  in shape with  its composition of  deoxyribonucleic acid  and cytosine. It is Gram negative and chemo-organotrophic. It is also motile with the help of flagella.
• Paenibacillus polymyxa is also known as Bacillus polymyxa which is  capable of fixing nitrogen. It is found in soil, plant tissues and marine sediments. It has a major role in forest ecosystems and potential future applications as a biofertilizer and biocontrol agent in agriculture.