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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
Question
For question, two statements are given-one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
  1. Both assertion and reason are true, and reason is the correct explanation of assertion.
  2. Both assertion and reason are true, but reason is not the correct explanation of assertion.
  3. Assertion is true, but reason is false.
  4. Both assertion and reason are false
Assertion: The subunits of ribosomes come together only at the time of protein formation.
Reason: Mg2+ causes their association or dissociation.
✓

Answer

  1. Both assertion and reason are true, but reason is not the correct explanation of assertion.

Explanation:

During protein synthesis, two subunits of ribosomes associate. Mg2+ is essential for it. Soon after the completion of protein synthesis, the subunits separate. The phenomenon is called dissociation.

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