Q970
RuBISCO content of chloroplast is
A.
20%
B.
5%
C.
11%
D.
16%
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
RuBISCO content of chloroplast is 16%.It is an enzyme involved in the first major step of carbon fixation, a process by which atmospheric carbon dioxide is converted by plants and other photosynthetic organisms to energy-rich molecules such as glucose.
RuBisCO is slow, fixing only 3-10 carbon dioxide molecules each second per molecule of enzyme. The reaction catalyzed by RuBisCO is, thus, the primary rate-limiting factor of the Calvin cycle during the day.