Q7 / 180 · JIPMER 2016 · Botany

Which one of the following elements is activator for both ribulose bisphosphate, carboxylase oxygenase and phosphoenol pyruvate carboxylase in photosynthetic carbon fixation?

  • Correct answer
    A
    $\mathrm{Mg}^{2+}$
  • B
    $\mathrm{Zn}^{2+}$
  • C
    $\mathrm{Mn}^{2+}$
  • D
    $\mathrm{Cl}^{-}$and $\mathrm{K}^{+}$

Solution

In photosynthetic carbon fixation magnesium ion $\left(\mathrm{Mg}^{2+}\right)$ is an activator for both ribulose bisphosphate carboxylase oxygenase and phosphoenol pyruvate carboxylase enzymes.

Hence, the correct answer is option: 'A'.

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