People recovering from a long illness are advised to include the alga $Spirulina$ in their diet because it:

Spirulina can be grown easily on....

Given below are two statements with respect to single cell protein.
Statement $I$: Single cell protein refers to the crude,or refined edible protein,extracted from pure microbial cultures or from dead or dried cell biomass.
Statement $II$: $SCP$ can be readily used as fodder for achieving fattening of calves,pigs,in breeding fish and in poultry.
In the light of the above statements,choose the correct answer from the options given below.

Why are proteins synthesised from Spirulina called single cell proteins?

What is $Spirulina$?

Torulopsis utilis is