From which of the following, photosynthetic autotrophs receive their energy?
Heat
Inorganic chemicals
Organic chemicals
Light
D.
Light
Photosynthesis is the synthesis of organic compounds (primarily sugars) from carbon dioxide (CO2) and water using light energy. The green cells of the plant convert the solar energy into chemical energy through this process. It's importance lies in the transformation of low energy compounds ie, CO2 and H2O into high energy compounds such as carbohydrates.
The first carbon dioxide fixation in C4 pathway occurs in chloroplasts of
guard cells
mesophyll cells
bundle sheath cells
epidermal cells
Which of the following is photophosphorylation?
Production of ATP from ADP
Production of NADP
Synthesis of ADP from ATP
Production of PGA
Plants purify air by which process?
Photorespiration
Photosynthesis
Photophosphorylation
Transpiration
The order of occurrence of the cytochromes in the F1 particle is
cyt-b, cyt-c, cyt-a-cyt a3
cyt-c, cyt-b, cyt-a-cyt a3
cyt-a, cyt-b, cyt-c-cyt a3
cyt-a3, cyt-a, cyt-c-cyt b
Chemiosmotic theory of ATP synthesis, in the chloroplast and mitochondria, is based on :
proton gradient
membrane potential
accumulation of K ions
accumulation of Na ions
