Single cell protein refers to:

a) A specific protein extracted from pure culture of single type of cells.
b) Sources of mixed proteins extracted from pure or mixed culture of organisms or cells.
c) Proteins extracted from a single cell.
d) A specific protein extracted from a single cell.

            According to what I have studied the answer seems to be (b) but it is given as (a).

Dear student,
Please find below the solution to the asked query

The correct option is a).
Single cell protein (SCP) is the specific protein extracted from pure culture of single type of cells.

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