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Question

It has been observed that about 250 g of Methylophilus methylotrophus produces 25 tonnes of protein per day. What is the mass of Methylophilus required to produce 2500 g of protein in the same period?

A
25 g
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B
0.0025 g
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C
2.5 x 105Kg
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D
0.00025 Kg
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Solution

The correct option is C 2.5 x 105Kg
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 105 kg of Methylophilus methylotrophus
Hence, 2.5 kg of protein will be produced by
2.5 X 1 X 105 = 2.5 X 105 kg of Methylophilus methylotrophus

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