In sugarcane plant ^ 14 CO _2 is fixed in malic acid, in which the enzyme that fixes CO _2 is :-

NEET 2003 Biology question

In sugarcane plant is fixed in malic acid, in which the enzyme that fixes is :-

(1)Ribulose biphosphate carboxylase
(2)Phosphoenol pyruvic acid carboxylaseCorrect
(3)Ribulose phosphate kinase
(4)Fructose phosphatase

Answer: (2)

Solution

Sugarcane is a C4 plant. In its mesophyll cells is first fixed by phosphoenolpyruvate (PEP) carboxylase, which combines it with phosphoenolpyruvate (a 3-carbon compound) to form oxaloacetic acid, later reduced to malic acid (the labelled C4 product) -

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-089300