Four statements about photosynthesis are listed. 1 Chlorophyll is required for photosynthesis. 2 The equation for photosynthesis is $$\(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{O}_{2} \rightarrow 6 \mathrm{CO}_{2}+6 \mathrm{H}_{2} \mathrm{O}\)$$. 3 Photosynthesis requires energy from light. 4 Photosynthesis releases carbon dioxide, which can lead to climate change. Which statements are correct?
A.
1 and 3
B.
1 and 4
C.
2 and 3
D.
2 and 4
Exam No：0620_m24_qp_22 Year：2024 Question No：35
Answer:
A
Knowledge points:
10.3.1. State the composition of clean,
10.3.2.1. carbon dioxide from the complete combustion of carbon-containing fuels
10.3.2.2. carbon monoxide and particulates from the incomplete combustion of carbon-containing fuels
10.3.2.3. methane from the decomposition of vegetation and waste gases from digestion in animals
10.3.2.4. oxides of nitrogen from car engines
10.3.2.5. sulfur dioxide from the combustion of fossil fuels which contain sulfur compounds
10.3.3.1. carbon dioxide: higher levels of carbon dioxide leading to increased global warming, which leads to climate change
10.3.3.2. carbon monoxide: toxic gas
10.3.3.3. particulates: increased risk of respiratory problems and cancer
10.3.3.4. methane: higher levels of methane leading to increased global warming, which leads to climate change
10.3.3.5. oxides of nitrogen: acid rain, photochemical smog and respiratory problems
10.3.3.6. sulfur dioxide: acid rain
10.3.4.1climate change: planting trees, reduction in livestock farming, decreasing use of fossil fuels, increasing use of hydrogen and renewable energy, e.g. wind, solar
10.3.4.2acid rain: use of catalytic converters in vehicles, reducing emissions of sulfur dioxide by using low-sulfur fuels and flue gas desulfurisation with calcium oxide
10.3.5. Describe photosynthesis as the reaction between carbon dioxide and water to produce glucose and oxygen in the presence of chlorophyll and using energy from light
10.3.6. State the word equation for photosynthesis, carbon dioxide + water glucose + oxygen
10.3.7.1. the absorption, reflection and emission of thermal energy
10.3.7.2. reducing thermal energy loss to space
10.3.8. Explain how oxides of nitrogen form in car engines and describe their removal by catalytic converters
10.3.9. State the symbol equation for photosynthesis
Solution:
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