Question

Установите последовательность этапов фотосинтеза, А) Синтез глюкозы Б) Синтез АТФ В) В молекуле хлорофилла электрон поднимается на более высокий энергетический уровень, приобретая дополнительную энергию, под воздействием энергии солнечного света. Г) Фотолиз воды Д) Образование молекулярного кислорода Е) Перенос водорода молекулой переносчиком НАДФ-Н2

Answer 1

Sequence of Steps in Photosynthesis

The process of photosynthesis involves several steps that occur in a specific sequence. The steps are as follows:

A) Synthesis of Glucose: During photosynthesis, plants and other photosynthetic organisms synthesize glucose, a simple sugar that serves as a source of energy. This process occurs in the chloroplasts of plant cells. B) Synthesis of ATP: ATP (adenosine triphosphate) is a molecule that stores and transports energy within cells. In photosynthesis, ATP is synthesized through a process called photophosphorylation. This process involves the conversion of light energy into chemical energy, which is used to generate ATP. C) Excitation of Electrons in Chlorophyll Molecules: In the presence of sunlight, the electrons in chlorophyll molecules absorb energy and become excited. This energy is used to power the subsequent steps of photosynthesis. D) Photolysis of Water: Water molecules are split into hydrogen ions (H+), electrons (e-), and molecular oxygen (O2) through a process called photolysis. This step occurs in the thylakoid membrane of the chloroplasts. E) Formation of Molecular Oxygen: As a result of photolysis, molecular oxygen (O2) is released as a byproduct of photosynthesis. This oxygen is essential for supporting life on Earth. F) Transfer of Hydrogen with NADPH: The electrons and hydrogen ions produced during photolysis are transferred to a molecule called NADP+ (nicotinamide adenine dinucleotide phosphate), forming NADPH (reduced form of NADP+). NADPH plays a crucial role in the subsequent steps of photosynthesis. It is important to note that the sequence of these steps may vary slightly depending on the specific organism and environmental conditions. However, the general process remains the same.

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