MCQ
In the nucleic acids, the phosphate ions are bonded with sugar at:
- ✓$5, 3$ locations
- B$5, 2$ locations
- C$3, 1$ locations
- D$5, 1$ locations
✓
Answer
Correct option: A.
$5, 3$ locations
In the nucleic acids, the phosphate ions are bonded with sugar at $5, 3$ locations.
The sugars and phosphates in nucleic acids are connected to each other in an alternating chain $($sugar$-$phosphate backbone$)$ through phosphate diesters linkages.
The carbons to which the phosphate groups attach are the $3\ '-$end and the $5\ '-$end carbons of the sugar.
This gives nucleic acids directionality, and the ends of nucleic acid molecules are referred to as $5\ '-$end and $3\ '-$end.
The sugars and phosphates in nucleic acids are connected to each other in an alternating chain $($sugar$-$phosphate backbone$)$ through phosphate diesters linkages.
The carbons to which the phosphate groups attach are the $3\ '-$end and the $5\ '-$end carbons of the sugar.
This gives nucleic acids directionality, and the ends of nucleic acid molecules are referred to as $5\ '-$end and $3\ '-$end.
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