MCQ
Barnacles growing on the back of a whale is example of .........
- AParasitism
- BAmensalism
- CPredation
- ✓Commensalism
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$I.$ very long molecule
$II.$ double-stranded
$III. DNA$ or $RNA$
$IV$. complementary to a part of desired gene
The correct pair is
Statement $I$: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid ( $N$-terminal).
Statement $II$: Adult human haemoglobin, consists of $4$ subunits (two subunits of $\alpha$ type and two subunits of $\beta$ type.)
In the light of the above statements, choose the correct answer from the options given below: