NEET · Biology · STD 12 - 5. molecular basis of inheritance

Given below are two statements :
Statement I : Transfer RNAs and ribosomal RNA do not interact with mRNA.
Statement II : RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence.
In the light of the above statements, choose the most appropriate answer from the options given below :

A Both statement I and statement II are correct
B Both statement I and statement II are incorrect
C Statement I is correct but statement II is incorrect
D Statement I is incorrect but statement II is correct

Verified Solution

Answer & Solution

Correct Answer

(D) Statement I is incorrect but statement II is correct

Step-by-step Solution

Detailed explanation

Both transfer RNAs and ribosomal RNA interact with mRNA.
RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match the items in Column \(I\) with those in Column \(II\):

Column - \(I\)	Column - \(II\)
\((a)\) Herbivores-Plants	\((i)\) Commensalism
\((b)\) Mycorrhiza-Plants	\((ii)\) Mutualism
\((c)\) Sheep-Cattle	\((iii)\) Predation
\((d)\) Orchid-Tree	\((iv)\) Competition

Select the correct option from following

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List - I	List - II
(a) Heart	(i) Erythropoietin
(b) Kidney	(ii) Aldosterone
(c) Gastro-intestinal tract	(iii) Atrial natriuretic factor
(d) Adrenal Cortex	(iv) Secretin