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What is the connection and difference between light reaction and dark reaction in biology high school?

2026-10-02 06:44
2026-10-02 11:17

The difference between light and dark reactions was as follows: - In terms of location, the light reaction occurred on the thylakoid membrane of the plastids, while the dark reaction occurred in the stroma of the plastids, and part of the process ended in the plastids. - In terms of conditions, the light reaction required light, vitamins, and other colors and zymes; the dark reaction required a variety of related zymes, but did not require light. - In terms of material changes, the light reaction occurs in the photodecomposition of water and the formation of ATPs; the dark reaction occurs in the fixing of CO2 and the reduction of C compounds. - In terms of energy change, in the light reaction, light energy is converted into active chemical energy in the ATP-based energy conversion process, and the energy conversion process is light energy-electric energy-active chemical energy; in the dark reaction, the active chemical energy in the ATP-based energy conversion process is stable chemical energy in the (CH ^O)-based energy conversion process. - In terms of reaction time, the light reaction took place in a short time, measured in microseconds, while the dark reaction took place slowly. The relationship between light and dark reactions was as follows: - The light reaction product [H] was the reducing agent of the carbon dioxide in the dark reaction, and the dark reaction was powered by the ATP. - The dark reaction produced AAD and Pi, which provided the raw materials for the light reaction to form ATP. - The normal operation of the dark reaction requires the [H] and the [ATP1] provided by the light reaction, in addition to the external conditions (such as carbon dioxide and suitable temperature). The dark reaction could be carried out with or without light. If the light reaction stopped, the dark reaction could continue for a period of time, but not for a long time. If the dark reaction was blocked, the light reaction would not be able to proceed normally due to the accumulation of products. The two were mutually restricted and closely related. Read more exciting novels for free

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2026-10-03 02:11

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2026-10-03 02:10

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