Question

1. The organisms that are prokaryotic and possess specialized structures called heterocysts to aid in fixing atmospheric nitrogen are

Group of answer choices

cyanobacteria

Archaea

Penicillium

Algae

Dinoflagellates

2. The cause of strep throat is ________________.

Group of answer choices

B. Streptococcus pyogenes- beta-hemolytic, group A

A. Staphylococcus aureus

D. Streptococcus pneumoniae

C. Staphylococcus pyogenes- alpha-hemolytic, group B

Answer 1

1. Cyanobacteria

Cyanobacteria or blue green algae is a prokaryotic organism. They have specialised vegetative cells called as heterocyst. They are meant for the fixation of Nitrogen from the atmosphere. They produce enzyme nitrogenase and protect it from oxygen.

2. Streptococcus pyogenes- beta-hemolytic, group A

Strep throat is a bacterial infection caused by Streptococcus pyogenes. It is a serious and contagious infection of throat and tonsils.

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