Answer:
Ans. RuBisCo, now termed as RuBP
carboxylase-oxygenase, is widely occurring enzyme because RuBisCo is used in
the Calvin cycle to catalyse the first major step of carbon fixation.
RuBisCO is thought
to be the most abundant protein in the world since, it is present in every plant
that undergoes photosynthesis and molecular synthesis through the Calvin cycle.
It makes
about 20-25% of the soluble protein in leaves and is made on the earth at the
rate of about 1000 kg/s. It is estimated that every person on earth is supported
by about 44 kg of RuBisCo.
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