A) 5 and 3 ends
B) N- terminal and C- terminal ends
C) reducing and non- reducing ends
D) None of the above
Correct Answer: C
Solution :
The two ends of amylose chain are designated as reducing end (the end of a polysaccharide having a terminal sugar with a free aromatic carbon) and non-reducing end. Amylose is a linear polymer of D glucose residues in a 1-4 linkage. 5 and 3 ends are present in DNA and RNA strands. Replication of DNA starts from 5 end and goes towards 3 end. In a polypeptide, the amino acid residue at the end with a free a-amino group is called amino terminal (or N-terminal) residue and the residue at the other end, which has free carboxyl group is called carboxyl terminal (C- terminal) residue.
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