What are c4 plants and what do they do?
i am no brainiac, but i can type: GOOGLE… The C4 pathway is a fuel injection system for photosynthesis that increases the rate of leaf sugar production in hot climates. Most plants on Earth use the C3 photosynthetic pathway, which fixes carbon dioxide (CO2) from the atmosphere using the enzyme Rubisco. The C3 cycle uses this fixed CO2 and energy from sunlight to manufacture sugars. The process is inefficient because Rubisco is not saturated and not very specific, which means that it also fixes atmospheric oxygen. This inefficiency increases at high temperatures and low CO2 concentrations. C4 plants overcome the inefficiency of C3 photosynthesis using a combination of anatomical and physiological tricks. First, the C3 cycle is isolated from the atmosphere within a leaf compartment. Secondly, the C4 cycle pumps CO2 into this compartment, filling it with CO2 and ensuring that Rubisco fixes nothing else. The pump is powered by energy from sunlight, and works by using the enzyme PEPc to f