Answer:
The term energy
currency refers to that molecule which provides energy for cellular activities,
whenever required. ATP is termed as energy currency because the energy is
present in the form of high energy bonds of ATR Other energy yielding molecules
are GTP, CTP UTR etc.
The
conversion of ATP to ADP yields about 7.3 kcal/mol of energy. This is the
energy source in a variety of biological processes occurring in both plants and
animals.
Justification
for the term 'energy currency' for A TP can be given as
(i) Store
small packets of energy as soon as it is available thus, minimising its
wastage.
(ii) Can
make energy available to a distant location in cell away from where the site it
is produced.
(iii) Can
carry out heavy work/activity by continuously supplying large amount of energy
through its accumulation at one place.
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