Assertion : DNA molecules and RNA molecules are found in the nucleus of cell.
Reason : On heating, enzymes do not lose their specific activity.

Options

A. If both the asseration and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and rreason are true but the reason not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

D

Explanation

(d) We know that DNA molecules are found primarly in the nucleus of the cell but RNA molecules are found outside the nucleus. By heating, its special structural arrangement is changed irreversibley, this result in the conversion of enzyme into a fibrous or insoluble form. Due to this irreversible change, enzymes lose their specific activity when heated.