MCQ
Collar cells occur in
- ✓Sponges
- BHydra
- CSandworm
- DStar fish
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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: