Differentiate between the following pairs on the basis of what is mentioned in brackets:
NADP and ATP [Expand the abbreviation]
Topic: NADP and ATP
Answer
NADP — NICOTINAMIDE ADENINE DINUCLEOTIDE PHOSPHATE ATP — ADENOSINE TRIPHOSPHATE
The brackets ask only for the EXPANSIONS, so give them in full — abbreviations earn nothing. Watch the spelling: NICOTINAMIDE, DINUCLEOTIDE, ADENOSINE.
NOTE THE NEAR-MISS between ADENINE and ADENOSINE. NADP contains ADENINE (a nitrogenous base); ATP contains ADENOSINE (adenine joined to a sugar). One letter, two different molecules — and the 2021 paper offers both spellings as options to catch exactly this.
WHAT EACH DOES, if you have room: both are made in the LIGHT reaction and both carry something into the DARK reaction — NADPH₂ carries HYDROGEN, ATP carries ENERGY. Together they are the link between the two stages of photosynthesis.
| Abbreviation | Expansion | Role in photosynthesis |
|---|---|---|
| NADP | Nicotinamide Adenine Dinucleotide Phosphate | The hydrogen acceptor of the light reaction |
| ATP | Adenosine Triphosphate | The energy currency, made in the light reaction and spent in the dark reaction |