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in class prof mentioned there is diplococcus & streptococci but there\'s NO tetr

ID: 279339 • Letter: I

Question

in class prof mentioned

there is diplococcus & streptococci

but there's NO tetrad coccus or tetrad bacilli, we just call it tetrad bacteria or tetrad arrangement.

so my question is what about sarcinae? do we call it Sarcinae-coccus or just Sarcinae bacteria or Sarcina bacteria or Sarcinae arrangement?

so if there is Diplococcus & Streptococci & Staphylococci ... why only NO tetradcocci? or sarcinaecocci??

also plural and singular matters??

answer my question or no credit will be given.

thanks

Explanation / Answer

Depending on the number and arrangement of cells,round or spherical cells can be defined as

Rod shaped cells are called Bacillus.

Rod shapped cells are arranged as