The correct option is C 2.5 x 10−5Kg
Cells from microorganisms such as bacteria, yeasts, filamentous algae are treated and used as food. It is called the single cell protein (SCP).
Methylophilus methylotrophus is a bacteria used as SCP.
As given in the question, 250 g (0.25 kg) of Methylophilus methylotrophus produces 25 tonnes of protein per day (25000 kg/day).
Find : Amount of Methylophilus required to produce 2500 g (i.e, 2.5 kg) of protein.
Solution:
25000 kg of protein is produced by 0.25 kg of Methylophilus methylotrophus.
Then, 1 kg of protein is produced by
0.25/25000 = 1 x 10−5 kg of Methylophilus methylotrophus
Hence, 2.5 kg of protein will be produced by
2.5 X 1 X 10−5 = 2.5 X 10−5 kg of Methylophilus methylotrophus