Question

1. What is the overall reaction for photosynthesis?

Answer 1

Answer:

The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products

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Answer 2

The overall reaction for photosynthesis is 6 CO2 + 6 H2O + light → C6H12O6 + 6 O2.

• Plants use sunlight to synthesise sugar (glucose) and oxygen by reacting carbon dioxide and water with the help of light absorbing chlorophyll pigment in the chloroplast.
• There are two stages to these reactions: light and dark reactions.
• Light is required for light reactions, whereas enzymes majorly control dark reactions and not directly dependent on light.
• The light reactions absorb light and convert it into energy, which is used to carry out electron transfers.
• Adenosine triphosphate (ATP) and reduced nicotinamide adenine dinucleotide phosphate(NADPH) are the end products of these processes .
• The light-dependent processes in plant cells take place in the chloroplast thylakoid membrane.
• For light-dependent reactions, the overall reaction is:
• 2 H2O + 2 NADP+ + 3 ADP + 3 Pi + light → 2 NADPH + 2 H+ + 3 ATP + O2
• ATP and NADPH reduce carbon dioxide and other molecules in the dark stage.
• Carbon dioxide from the atmosphere is "fixed" into glucose.
• The Calvin cycle is the name given to the dark reactions in plants, algae, and cyanobacteria.
• The entire response for a plant's light-independent reaction (Calvin cycle) is as follows:
• 3 CO2 + 9 ATP + 6 NADPH + 6 H+ → C3H6O3-phosphate + 9 ADP + 8 Pi + 6 NADP+ + 3 H2O
• Both these reaction together constitute the overall chemical reactions of photosynthesis.