A slight backleak of potassium ions into the lumen, creating a positive charge of about +8 millivolts in the tubular lumen.

TLS Online TPP Program

#Id: 9220

#Unit 6. System Physiology – Plant

C2 oxidative photosynthetic carbon cycle is a coordinated enzymatic reactions, also known as photorespiration, occurs in chloroplasts, leaf peroxisomes, and mitochondria

TLS Online TPP Program

#Id: 9221

#Unit 6. System Physiology – Plant

2-phosphoglycolate is an inhibitor of two chloroplast enzymes: triose phosphate isomerase and phosphofructokinase.

TLS Online TPP Program

#Id: 9222

#Unit 6. System Physiology – Plant

Warmer environments significantly limit the efficiency of photosynthetic carbon assimilation because the progressive increase in temperature tilts the balance away from photosynthesis (carboxylation) and toward photorespiration (oxygenation)

TLS Online TPP Program

#Id: 9223

#Unit 6. System Physiology – Plant

Warmer environments have the effect of: Increasing the oxygenase activity of rubisco more than the carboxylase activity.

TLS Online TPP Program

#Id: 9224

#Unit 6. System Physiology – Plant

Warmer environments have the effect of: Lowering the solubility of CO2 to a greater extent than O2

TLS Online TPP Program

#Id: 9225

#Unit 6. System Physiology – Plant

Warmer environments have the effect of: Reducing the stomatal aperture to conserve water. The stomatal closure lowers the uptake of atmospheric CO2, thereby decreasing CO2 at the active site of rubisco.