Question

Identify the site of PEPcase in C4 plants: 1) Cytoplasm of bundle sheath 2) Cytoplasm of mesophyll 3) Chloroplast of bundle sheath 4) Chloroplast of mesophyll

Answer 1

Answer:

The site of PEPcase in C4 plants: Option 2

2) Cytoplasm of mesophyll is the correct answer.

Step-by-step explanation:

• PEP is present in the cytoplasm of mesophyll of C4 plants.PEP(Phosphoenolpyruvate carboxylase) initiate the carbon fixation in which  it act as a primary acceptor of CO2 and give rise to OAA.
• PEP catalyzes the phosphoenolpyruvate to produce oxaloacetate(OAA) and inorganic phosphate does involve in carboxylation.
• Therefore PEP is important for carbon fixation in C3 and C4 plants.
• PEP belongs to class of lyases enzyme.Lyases catalyse the removal of a group by other than the hydrolysis process, forming double bonds.