Question

Questions Regarding Lab (Photosynthesis) A Name the specific organic molecule that is produced directly by photosynthesis: G3P B. Name the molecule that is removed from the environment during photosynthesis: CO2 C. During which process does the splitting water to release hydrogens and electrons occur? occur D. During which process does the fixing of carbon dioxide into carbohydrates occur? E. Name the structure by which carbon dioxide enters the leaf: F. Name the type of chemical reaction that results in the substrates ADP + P combining into ATP during the light dependent process. 141

Answer 1

A. The first product formed during photosynthesis is 3PGA ie 3 Phosphoglycerate.

B. CO2  is removed from atmosphere during process of photosynthesis.

C. Splitting of water takes place in the presence of light, this phenomenon is called photolysis of water and it takesplace in lumen of thylakoid. It is associated with non cyclic transfer of electron during light reaction.

D. The fixation of CO2 into carbohydrate occurs during Calvin cycle.

E. CO2  enters the leaf through structure called STOMATA.

F.  The use of light energy for ATP formation occurs indirectly: a proton gradient and electrical charge—built up in or across the lamellae as a consequence of electron flow in the light reactions—provide the energy to drive the synthesis of ATP from ADP and Pi. The process is called Chemiosmosis.

G.